Natsuo Fujii (藤井 夏生, Fujii Natsuo) is the main male protagonist of Domestic na Kanojo. He is introduced as a second-year high school student who loves writing novels, so he frequently heads to the rooftop during his lunch breaks to develop his passion. It is there that he meets the rookie English teacher named Hina Tachibana, who becomes his first crush.
Due to her constantly treating him as a brat as well as thinking that he would become an unrequited love, he accepts the proposal of Rui Tachibana, a cute but odd girl he meets at a mixer settled at karaoke by his friends. Both end up having their first sexual experience together, after which she tells him to forget about it and expect to never meet again.
Just days later, his widower dad tells him that he is getting married again. That same afternoon, they are paid a visit by Tsukiko Tachibana (Natsuo's stepmother-to-be) and her two daughters who, to his absolute shock, turns out to be Hina and Rui.
As a high school student Natsuo's performance in academics were good. Upon graduating from high school, Natsuo takes a placement test and succeeds in becoming a student at Meiji University. It is there that members from the drama club Forester took notice to his abilities and invite him to become a script writer for their plays.
Natsuo is a young man with black hair and olive green eyes. His current appearance is far different from his junior high days thanks to following the suggestion of Fumiya Kurimoto (Natsuo's best friend), who forced him to wear contact lenses instead of eye glasses and have his curly hair flattened daily.
Natsuo is a kind and friendly teenager who's sensitivity and insight make him a chick magnet, although he doesn't notice it straight forward because of his obliviousness. He's a highly adaptive individual, easily doing teamwork as well as becoming competitive when required. He has a very active imagination, of course, but because of that, it is not unusual for him to have lecherous thoughts that assault him from time to time, even though he truly tries to control them. He assumes every compromise as seriously as he can, avoiding letting others down. This has led him to learn to bottle up his feelings when he considers they might be a burden to the people that trust him. He is responsible and hardworking, but due to his sensitivity, he can't help getting depressed - usually needing the help of others to come back. As the series develops, he gains maturity, but still, his lack of experience due to his youth puts him in some very awkward situations, which he tries to deal with the best way he can.
Natsuo is the only child of Akihito Fujii and Jun Fujii. By the time Natsuo entered elementary school, his mom had already been admitted to the hospital and probably he was a cry-baby back then because of that. Unfortunately, she passed away later in that same year, when Natsuo was only just seven. Even though his father tried his best to make things right, and to make their normal lives as they could, Natsuo ended up shutting himself in his mom's room. It is there he thought he could read some of the books kept at her bookshelf. He thought that delving into those might make him stop dwelling on thoughts of his mother not being around nor him being alone and became a bibliophile since then.
Goals & Aspirations
Natsuo's got it clear that he wants to become a writer who can make a living of it. He says he enjoys the surprise and emotional impact he finds in books. Ever since Junior High School, he has dreamed about creating such worlds himself with his writing. For just as books saved him when he was a little child mourning his mom, he dreams that he could someday give others a chance to enjoy books as he did. He says he wants to become the kind of author that moves people with his writing the same way others have moved him. To achieve so, he is willing to work hard. First, he asks Reiji Kiriya to accept him as his apprentice. But after winning the 77th Shinkousha Literary Award, the editor Tsutaya-san gets in charge of him. Later, he is appointed as a disciple-assistant to the writer Kurumi Giwa, known as Tougen Shigemitsu, who introduces him into the habit of researching and interviewing real people to collect material that can be used in his novel writing.
Ten years prior to the start of the story, Jun Fujii (Natsuo's mother) was bedridden due to an unmentioned cause. Their family was firm and filled with love, however, his mother did not survive her disease and died one day. Natsuo, who was still a kid, promised her not to cry at her burial but his father told him not to; as it is okay to express it for his love to her.
Ten years after, Natsuo is now a senior high and only lives with his father at an apartment complex near Fumiya Kurimoto (Natsuo's best friend). Both were best buds as childhood friends as the latter showed him to do an appearance makeover. His favorite hobby is to write one-shot novels; having him skip lunchtime to write at the school's rooftop.
One year prior to the start of the story, Natsuo met their fresh graduate English teacher named Hina Tachibana at the said rooftop while he was doing some novels. Although it was not mentioned if it is because of their first meet up that Natsuo fell in love with his teacher-- promising Hina to be the one who'll read his novel.
At day one, Natsuo was invited to go into a mixer along with his two classmates. They all met up at a karaoke cafe in which he met a girl named Rui Tachibana; a mysterious girl who also bears the same last name of his crush. Later on, both talked at a cola stall and admitted they were not used at this kind of meet up. Without any impulse, Natsuo saw a bit of resemblance towards Rui and Hina that eventually shocked him. Awkward towards one another, Rui started to ask him to ditch the mixer to come along with her.
Natsuo and Rui proceeded to the latter's home in the afternoon for a favor she wanted him for. Later on Rui asked him to have sex with her, a bit confused as to why him, though she replied he looks like a first-timer of sorts. She also mentioned her other reasons and just to have an experience, yet more like what it feels like to do it. Natsuo in time remembered about a line his friends said about Hina having already a boyfriend. Thinking about that fact, Natsuo agreed to do it with her, thus losing his virginity at the person he was not interested, still feeling regret.
Afterward, Natsuo headed into their apartment complex into Fumiya's and narrated all that has happened. The latter was surprised to the predicament he was involved with, although a lucky bastard, he is also jealous of his state. Natsuo once again felt his regret yet Fumiya wouldn't agree the most since Hina has already a lover.
Later that day, Natsuo headed home and saw his old man busy calling someone at the phone. He decided to write the next day, the second time in the story he and Hina-sensei got a lonesome time at the rooftop. His teacher teases her to read his novel but felt embarrassed because it's still incomplete. It was then that Natsuo told the throwback moment they met at the same place last year. Returning to his home, he set his gaze into his empty sheets of paper; the papers he uses when writing his story.
He hurriedly set foot to the rooftop as he thought that lunch is also a crucial part for his writing time-- only then to see his crush staring past the steel fence. Hina sensed him coming and glanced back, tears flowing down her beautiful face. Asking her why she stated it was because of the scenes of a drama she watched last night. Though to his stead, it was not. Natsuo persuaded to tell him her problems however she just deterred the situation as it is not for kids to meddle with. Still, he still felt left out, starting to treat him more as a man but he was interrupted by a certain call from her phone and she said, "Sensei, you really look so pitiful". That moment never disappeared from his memory, though to his own it is really inevitable.
After school hours, he returned home since he doesn't have any club to attend to. As he entered their apartment he saw his father hanged the call. Suddenly, he tells his son for his remarriage at the moment his step-mother to be shall be visiting them that night.
Eventually, after his father opened the door, Natsuo met Tsukiko Tachibana, the woman Akihito Fujii (Natsuo's father) will be remarrying and along with her two daughters - which are already his acquaintances- named Hina and Rui. Too much for this surprise, Natsuo's consciousness fades and collapses. Later on, the five of them are seating in front of the dining table while 'babysitting' Natsuo and formally Miss Tsukiko introduced herself.
Albeit doubtless, Natsuo asked her what she saw towards his old man, answering he was the only man who never gave up despite Ms. Tsukiko has a heart of ice. That was because of her former husband running away because of a mistress. Nevertheless, her expression was never been like before ever since Natsuo's father swayed his time for her.
Hina, on the other hand, was served of beer by Natsuo. It was unexpected for him to see his crush addicted with alcohol as he blushes seeing her indulge it with a smile. His teacher and sister to be would rather ask him to drink with her only if she wasn't minor. Telling her that, Natsuo headed to the bathroom to take a dump in which Rui waited for him to come out. She asked if he saw this coming but he denied it, and Rui didn't think Natsuo was the one Mr. Fujii was telling them about.
Natsuo suddenly asked her too, about acknowledging their parent's remarriage and if it will somewhat affect their daily life. Rui stated she will gladly accept it so her mother shall feel happiness which she hasn't seen by the past years. She also requested her to forget about their first meeting and what they did in order to prevent more problems. After their encounter, Rui returned to the living room and Natsuo was a bit skeptical for deciding after everything happened.
The Tachibana's headed home after their dinner; leaving Natsuo and his father alone again. He then sees his father delighted to their visit and happy as he was willing to wash the dishes on his own. Natsuo paused for a moment, then he recognized his father's remarriage although he should've first been notified, hearing that his old man's smile was over his ears, and again his father suddenly added he bought a second-hand house where they'll transfer next week.
Natsuo and his father rode a cargo van for home transfer the next week and the Tachibana's were already at the house when they arrived. Whilst being busy at arranging every nooks and cranny, Hina greeted Natsuo at the entrance as he was carrying a box. Both had a bit of chat, with Hina wanting his step-brother to call him Hina-chan and her still calls him the same. The fact he was requested him to call Hina with a "-chan" made him embarrassed once he tries it. Though in the end, she brushed it off to just call her Hina-nee since Rui calls her that.
He proceeded to the second floor and eventually saw Rui at the hall. Pissed by his facial expression every time he sees her, Rui angrily told her once again to forget about the past then later entered her room. Despite hearing it from her, he couldn't just remove it since she was his first. They all had a nice dinner together and Hina was the first to bath, Rui's mother told her to have a bath next in which Natsuo reminisced his time they had sex and her naked body.
Hina went out of the bathroom with just a towel covering her chest, she screamed after realizing her mistake and took a word from her mother. Natsuo stayed at the living room to read more, Hina arrived wearing sleeveless shirt and hotpants leaving her still showing more skin that makes Natsuo intimidated. She headed straight to the ref to have some beer and was drunk like an old man afterward. Natsuo's parents then headed into their room while Hina was dead asleep at the sofa, and Rui having her time at the bathroom.
Hina's state was so defenseless, it really intimidated Natsuo to steal a kiss from her, but then Rui came; only to see his face surprised. Rui then asked him what he was doing, and Natsuo lied. Afterward, Rui woke her sister by kicking Hina down to the floor and dragged her towards the hallway. Rui, though, reluctantly told him she saw what happened.
Friendless transfer student
The next day, Natsuo dreamed of his stepsisters, the "ecchi"-way, and woke up late for school. He rushed into his school with his untidy bed hair as his friends talked about a transfer student next door. The trio headed on to see the person, and Natsuo got surprised seeing Rui Tachibana was the transfer student. She was flocked by her new classmates but ignoring the crowd. Later on, she noticed Natsuo at the hallway and walked towards them- telling him also of his bad hair. Rui asked him if he also forgot his lunch because he's rushed to the school and almost slipped her tongue pertaining to their relationship.
Natsuo suddenly dragged him out of the school building into the open area where he asked her why she transferred. It was also into his extent to not tell everyone about their true relationship as step-siblings however it also backfired when Rui bluntly thought there was no need for them to talk at all; leaving the area and Natsuo alone.
Natsuo came to her once again eating lunch like a lone wolf. Rui was still fixated to Natsuo's curly hair and offered her to fix it for him. She also told him how she envies her sister's friendly personality which she doesn't have. It also came to a point when she tried copying her way of speaking. He reluctantly decided to help her communicate with her classmates with some impromptu speeches that wildly lead into some stand-up comedy. Somehow the crowd on Rui's class exploded into laughter after hearing them doing it with most of them approaching her and offering friendship, and her shyness got the best of her, again.
Natsuo headed home after school. He was clearly on his mind world as he entered the already filled bathroom with a Rui sitting at the hot bath and reading a plastic sealed book. He was already half naked; with just a small towel covering his below. Both became anxious to the situation, and Natsuo completely blushed as he quickly exited the room. However, Rui asked him to enter, telling that Natsuo already saw everything on their one night stand, yet more on offering him her gratitude for helping her befriend everyone at her class. She also regretted doubting Natsuo's motive after seeing him almost stealing a kiss from Hina, making him accept her request to enter. Although, Natsuo also thought Rui is asking for something more than just gratitude. Albeit his true feelings, Rui thought he only meant to help Hina on her problems.
Hina the Mistress
The Natsuo-Rui bath time conversation ended with the latter not sharing most of the details of Hina Tachibana's affair. The next day, their parents decided to formally file their marriage at the city administration. Both also wanted to celebrate their remarriage by eating at night and asked their children to take care of the house. Inexperienced as she is, Hina gladly accepted to cook for them since she's the oldest yet their mother doubted her daughter's capabilities.
The sudden event got Natsuo feeling excited to see Hina's cooking, surprised to see that she cooked delicious foods with Rui. Although it was Rui's talent and Hina just done the littlest effort with chopping tomatoes and stuff. Yet Natsuo was more impressed of Rui's talent in the kitchen which made her blush for his praise and also life savingly commended Hina's collaboration.
Afterward, Rui headed back to her room to read, leaving Natsuo and Hina alone in the kitchen. While they were having a conversation and teasing one another, Hina lost her balance and Natsuo caught her in time. A sudden pause made them look eye to eye then was interrupted by a call from Hina's phone from Shu Hagiwara. Her tone swiftly changed to more serious and ended the call stated she needs to head outside to meet him at the front gate. Natsuo wanted to follow her although she asked her to stay indoor since it would be quick. The nippy time she told became an hour and Natsuo was still waiting for her to return until he decided to go outside. Yet he heard Hina's voice saying "I've had enough!" as she burst the door open; her face told everything, her body shaking even if she said she's fine.
Suddenly the doorbell rang, Natsuo thought it was Hina's lover, she kept on telling him it's fine. Natsuo drastically asked her the problem until Rui came down to see what was happening. Unbeknownst to what is beyond the door, Rui opened it since it endlessly rung, and the person they' expected it to be was actually their parents who were drunk with gifts for their children. The heavy atmosphere shifted quickly after seeing their parents, not knowing Hina was holding her emotion at the time being and headed back to her room.
The next day after school, Natsuo headed into the L'amant Restaurant to share his anxiousness of Hina's love life to Fumiya Kurimoto. His best friend iterated that it was somewhat jealousy, although his point was about the people asking advice from the Boss, especially the one man with his mistress. Later on, as they narrated the certain situation with Natsuo somehow filling the blanks correctly, it all turned out into some half time comedy scene with Boss and Fumiya fighting over their husband: Natsuo.
Later on, Fumiya accompanied Natsuo after his shift. They both traversed a street when Fumiya pointed his finger towards the woman whom he was stating earlier at the restaurant; it was Hina who seem to be heading home after exiting from the front seat of a black car. A man with neck length blonde hair was at the driver's seat which Hina was talking to until the mirror was shut close. He had a bad feeling and the pieces of every detail he has are forming into an awful image.
Alone in his dark room and sitting at his bed with his mind at deep thought, Natsuo finally figured everything. In the late night, he proceeded to Hina's room to finally ask if she's having an affair.
"I plan on leaving my wife. But it just can't be right away..."
As he spoke the line, it surprised her. Hina looked away, she paused for a moment, and gave her undeterred answer, she doesn't want to give up at all. Their conversation came to a point of no return and Natsuo couldn't control his emotion as he literally kissed his step sister. Hina pushed him back and slapped him. But then Hina kissed Natsuo and pushed him down her bed. She untied his shirt's upper button to make him realize his mistake and giving him a lecture that he's still an immature brat. Thinking about their difference of thoughts, Natsuo went back to his room and cried out his pain away.
Natsuo decided to run away from their house into Fumiya's apartment the next day. The only reminder he gave to his family was a piece of paper telling his intention to stay at his best friend. Neither he could not bring himself to tell his parents about the truth, instead, he called for a better way by cooling things off a bit and think the best course of action. This, however, gave risk to their parent's remarriage as both of them realized that their sudden decisions it resulted in this. As for them and Rui, Hina's expression was different, the latter figured she had an idea for his action.
For the rest of the day, Natsuo lied down at Fumiya's room in the same position where his friend left him. Going to school for the moment was not an option since he'd see her after all. Later on, Fumiya returned home earlier from his shift at L'amant. He refused to say anything to his friend, worried and regretted what he did to her. Fumiya thought that Natsuo would be giving up on Hina, which he sees a big opportunity for his plan to court her. His wild imagination somehow ended up for Natsuo to hold him down, instead, it was the latter that got wrestled into the ground. He encouraged him to not waste the time cooping at the floor and use his energy to write his novels. His problem even blocked his sense that only his friend gave him the lecture to focus on to become a novelist.
Without any doubt, Natsuo started writing the next day. Later in the afternoon, he took a break and looked past the window. The clouds were dark, the rain poured heavily, and the single thing his eyes set into was a girl in uniform with an umbrella while searching for someone; it was Rui. She was fixated to what she's doing, also bizarrely looking below a parked sedan. It only took a moment for her to gaze above a lit window and saw Natsuo staring back at her. She's probably looking for him after knowing Natsuo stayed at his friend's apartment.
Rui asked her to let her enter the apartment too, but Natsuo can't give the answer since he's not the owner. Afterward, Rui decided to look for an internet cafe to stay but he stopped her, and let her wait for him at the entrance. She asked him right away his reason for leaving, linking the situation with her sister. Fumiya's mother appeared at their location, she asked the two teenagers of their relationship and found out Rui was the youngest; her pout was also cute.
Afterward, Mrs. Fumiya allowed her to stay inside too. Natsuo realized his decision was really reckless after seeing Rui's completely soaked shoes and socks, he never thought the latter would go this far to care for him. Mrs. Fumiya could, later on, offer them a hot tea, and the two headed into his best friend's room. In the nick of time, Fumiya arrived, shocked to his approach to see a girl inside his room.
As the sky changed from sunset to nighttime, the rain came to its end, and the three kept themselves inside of Fumiya's room. Rui was dressed into her fancy pajamas. She was totally prepared for her boycott plan even she said it was sudden. Leaving everything aside, Fumiya slid his tongue as he recklessly spoke about Rui and Natsuo's first meet up. Although, she never think as a bother after knowing Fumiya's not at the same school.
They finally headed straight to the problem at hand as Rui mentioned she knew everything about her sister. She even made the same move like Natsuo, it also ended up with the same outcome, she only wanted to see her sister back from who she was. Fumiya asked Natsuo and Rui for their true plans, he really wanted for Hina and her lover to break up. As both parties have benefit for their plan's output, Rui and Natsuo accepted Fumiya's strategy by first finding the person their sister's in an affair with.
All plans were set so the two headed back home that night. They were both approached by their parents who were silently sitting until they turned the lights at the living room. Both felt relieved to see them back, a divorce paper was idle at the table top waiting to be filled up, but Rui and Natsuo cleared their true intention. His father wanted him to vent his problem to them instead of leaving their house, but for the current situation, it'd be better to keep it all secret. Suddenly, Hina rushed to the area expressing her relief to see them, especially Natsuo. She fell into the floor, apologizing for her actions instead.
Natsuo and Hina encountered one another at the staircase the next day. The latter greeted him for the morning but he made nothing for an expression and passed by as he returned her greeting. He sat next to Rui at the dining and both have the impression to execute their plan in the afternoon.
All started from the stand-up bar of past school hours to the live comedy the next day, and at a certain populated street where she met a student asking for advice; their attempt to lure Hina's lover was a complete failure. They clearly struggled to achieve their mission objective. Their endgame was to sneak into the bath while Hina was bathing to take her phone. Afterward, Rui tried to call Shū Hagiwara with her sister's phone as they intend to make a break up as she mimicked Hina's voice; it still failed at all.
The next day, Rui and Natsuo rested their face at L'amant telling their captain (Fumiya) they failed the mission. The boss bumped into the conversation after knowing the problem but Natsuo doesn't want him to. He rather told them how great and radiant their youth is as if he felt some regret from his past. Suddenly, Natsuo and Rui were surprised to see Hina and Shu together after entering the bar. The bar's atmosphere suddenly got tensed, Natsuo thought it was the best time to tell them to break up but Boss Marie interrupted. He asked both parties to seat at the farthest corner so they can talk this better and not to give other customers the feeling of disturbed. He also offered them a Neapolitan Noodles to calm Natsuo.
Shu introduced himself despite the pressure from Natsuo and Rui were giving. He also added they were dating for exactly two years. Rui then interrupted him and asked whose fault and initiator. Although they admitted none of them did, Shu took the fault for it and apologized. Hina's face gave way for Natsuo to know what she really felt as she gazes down; a habit she does every time she's in discomfort. Natsuo was also frustrated after Shu thought it'd been best if they told their relationship to them immediately rather than getting caught. She also asked him if he will be happy once his divorce will be complete; he got him by the tongue and wasn't able to respond at all.
The conversation continued until the detested Rui couldn't handle her temper anymore. She ran off the restaurant after throwing her glass of water to Shu's face, Natsuo was surprised to her actions but he rushed to her side instead. Rui ran as fast as she can into certain upper streets where they finally stopped. Had he not done it, Rui said she was ready to pull the trigger, and finally loosened all her disgust and anger. She cried as hard as she can while Natsuo only comforted her since it's the only part he could do for Rui.
The next day, Natsuo woke up, he headed straight to the bath to wash his sleepy face. Shocked to what he saw was Rui with her bad bed hair; freckled hair but less messy than Natsuo's. Her eyes were surely dry and swollen, a hint she really cried hard that night.
Afterward, the two proceeded to the dining room and sat at their own chairs. They're more surprised to the large scribble of a flower centered at the 12th of May; Mother's Day. Hina joined the conversation when she entered the dining too. She asked her little sister to come with her buy presents. Rui straightly answered her with a no as she dropped her bowl and went straight to her room upstairs. The incident surely affected their sisterly relationship is given how Rui avoided her completely and Hina's reaction from her answer. She also asked Natsuo to keep her company which he also rejected. He was clearly had a goal for the day with his father ask him to give his regards. After that, Natsuo headed out to his destination, Hina, on the other hand, was filled with info to where he's going.
Natsuo arrived at the cemetery where his mother rests. He carried a water bucket and spade to her grave to wash it; a traditional Japanese culture when visiting a tomb of relatives. Afterward, he met Hina and Rui who followed him with presents for Natsuo's mother. Natsuo was surprised to see them together after Rui rejected her offer that morning. Then he was filled with the info that Hina finally decided to break up with Shu as she concluded that Natsuo and Rui are one of the most important people to her; stating she couldn't fathom to hurt the members of her family. Rui also responded to Hina with a happy expression- the first time Natsuo saw her great smile. After that, Rui and Hina placed their presents to his mother's grave, introducing themselves, and asked her to guide and watch over them.
Teacher and student
After the apparent break up of Hina and Shu, the Tachibana sisters seem to have fixed their differences and enjoying their time together even with occurring little spats. Natsuo is on a situation and opportunity to snatch Hina's heart. Although he later found it out when he overheard her and Kiriya, at the night of their club's summer camp, that she still loves Shu and she regrets breaking up with him. He questioned himself if it's really the right choice, as he even spotted her toying her body at one night while speaking his ex's name.
On Hina's side, she wants only to consider Natsuo a little brother but inside her, a blooming emotion has already been built for him. She seemingly wanted not to force her true emotions but they ended up lovers after the summer festival.
Hina and Natsuo became attached to one another and had a date one time on a city far from their home. They even call one another with their first names when they are alone, and ended up having sex on their school trip. Yet Hina decided to live apart from her family after catching Rui and Natsuo doing lewd things inside his room, and finding out her little sister loves him too.
With her living away from home gave a better advantage to her and Natsuo, it created larger space for them to cuddle and who knows what whenever he is around. Hina even started cooking on her own from scratch for her and Natsuo's sake. Rui would later found their true connection after Natsuo lied to where he goes on after school. Yet their relationship was ultimately abrupted after a picture of her and Natsuo kissing was been given to their school by their administration body. Hina begged them to not dismiss her from her duties and instead be assigned to another school far from her family without Natsuo's knowledge. Although the school has already gave information to their parents.
Not knowing what has truly happened, Natsuo's been paralyzed to what he must do next. He wanted to search for Hina but he doesn't know where to start, yet he continued his novelist training from Kiriya in order to win the rookie novelist award. He stayed up all night and day to finish his novel, Rui in turn wished her luck and supports him as always. At the day he finished his work, Natsuo finally came out of his room, his father talked to him of his worries and wants to support his only son as his burden, his problems is not for him alone.
His friends came to his support on the day of the award, and Natsuo won the title from the story he based entirely from Hina. At that time, they were all graduating students.
Novelist and Chef
|"Nice to meet you, reader."|
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Dreamless People Arc
Fumiya Kurimoto, eager to meet women, aggressively pushes for Natsuo to host a mixer with Kasumi Hazuki and her friends. It is during this mixer that Natsuo first encounters Misaki Ogura. In a predicament that closely mirrored his original meeting with Rui, Misaki asks Natsuo if he wants to sneak off together. Natsuo declines her offer and goes on his way. Despite this, Misaki follows him all the way to his apartment. Though Natsuo does whatever he can to shrug her off, she ultimately ends up staying at the apartment with him.
The next morning, Natsuo is relieved to wake up seeing Misaki gone. Unfortunately, he enters the bathroom and walks in on her using his shower. Embarrassed, Natsuo demands that she leave immediately. Instead, Misaki leaves the bathroom wearing nothing but a towel, pushes Natsuo on the bed and attempts to seduce him. Natsuo eventually relents and pushes her away, revealing the burn scar on her face. Natsuo apologizes and inquires about the scar. Misaki explains it was from her modeling days when someone sabotaged her by putting a foreign ingredient into her moisturizer, burning her face and effectively ending her career. Though she was compensated for the incident, it was under the agreement that she keep it under wraps to prevent a scandal with the company. For the next three years afterwards, she bounced from job to job, even delving into prostitution to make ends meet. Pitying her, Natsuo allows her to stay a little longer, under the condition that she finds work and is actively looking for another place to stay. It is at this moment Kasumi sees Misaki in the street, receiving money from a strange man.
The next day, Misaki offers money to Natsuo, which he refuses because he felt wrong taking what little money she had (though just as much, he also wanted to discourage her from staying with him.) Misaki then offers to take Natsuo out on a dinner date to a fancy restaurant with a view of the city. As they enjoyed the sights, Natsuo also confides to Misaki that he has been burnt out from writing. It is at this moment Natsuo realizes that he and Misaki are both lost in emptiness. That same night, Misaki receives a phone call and apologizes to Natsuo as she leaves. She didn't return that night to the apartment, and Natsuo realizes he doesn't even have a way to contact her. The next morning, Natsuo wakes up and sees Misaki again, sleeping under the kotatsu as usual. He sees a note left by Misaki that reads "Sorry about yesterday."
Later that day, Hina Tachibana stops by Natsuo's apartment to drop off some food. To her surprise, a man unknown to her inquires her about Misaki. After claiming to not know her, the man leaves, wondering if he got the right information. This leads Hina to tell Masaki Kobayashi about the incident, which he uses his Yakuza resources to investigate.
That night, Natsuo helps train Misaki on how to interview for a job, much to his dismay since she seems to not be taking it seriously. As they're about to sleep, Misaki asks Natsuo what he plans to do after graduating college, to which he says he's unsure and is just thinking of getting a regular job. Misaki suggests to Natsuo on running away together to see the aurora borealis. Natsuo contemplates her offer as he falls asleep.
The next day, Misaki is walking around in a shopping district. She then comes upon an advertisement for a magazine she was originally supposed to be modeling for. Fast forward to that night, she arrives to Natsuo's apartment inebriated and joins him in the shower, much to Natsuo's embarrassment and protest. Misaki then attempts to seduce Natsuo in the shower, stimulating him with oral sex. Natsuo finally begins to relent and asks her if sleeping with her will make her feel any better. Although Misaki says it would, she immediately dashes to the toilet to vomit and passes out. Misaki later wakes up later on Natsuo's bed. Natsuo is worried she may have alcohol poisoning and wants to bring her to a hospital. Misaki suddenly becomes frantic and begs Natsuo to not bring her there, feigning her reasoning was because the hospital was a traumatic experience since they treated her for her burn.
The next morning, Misaki graciously thanks Natsuo for taking care of her. She was a bit relieved Natsuo wouldn't tell her to leave afterwards, which he stated he couldn't find it in him to remove her in her current state. Natsuo then heads out, leaving her home alone. A few minutes later, Natsuo returns home after forgetting his phone, stumbling upon Misaki snorting drugs. Natsuo suddenly realizes this was how Misaki became inebriated the other day and admonishes her for committing a terrible crime under his roof. Misaki retaliates by saying she sneaked some into Natsuo's food in order to blackmail him from contacting the police. Although the threat fails to intimidate him, Natsuo looks upon her scarred face and forgives her, telling her he'll let it go this once if she makes an attempt to quit. As this happens, loud banging is heard from Natsuo's door. It turns out to be Misaki's dealer who is looking for her. As the dealer starts to get rough with Natsuo, Misaki reveals herself and discusses matters with him outside. Misaki then reveals to Natsuo that she's been drug running for over a year now and is in too deep to leave. Natsuo then confiscates the drugs from her and says he'll be hiding it, and threatens to take her to the police if she gives in, regardless if he's an accomplice or not.
The next day, as Natsuo is visiting his sensei, Misaki stays at home and answers the door for Hina. Hina asks if Misaki is in some kind of trouble and is willing to help. Misaki is gracious for her offer and remarks that Hina and Natsuo are alike.
Later that night, as Misaki is watching the cooking channel, she fights her urges to use drugs, but eventually caves in. As she searches the room, Natsuo appears and tells her he actually discarded the drugs. Misaki starts to break down and cry, telling Natsuo she's really trying to quit. After what Natsuo heard from his sensei about drug addiction, Natsuo knew he couldn't abandon her, not just out of sympathy, but because he could've just as easily been in her predicament. Natsuo tells Misaki that she needs to end this and talk to the police, which she finally agrees. As they walk towards the police station together, the dealer and his accomplices ambush them, binding and gagging them and forced them into a van.
While they are in the van, Natsuo manages to sneak a call to Hina on his phone. Later, Natsuo and Misaki are thrown on the floor of an abandoned building. The thugs interrogate them on the drugs that Misaki has been stealing on the side for herself. Misaki denies this and Natsuo supports her statement, saying that he threw away the drugs and it was only a few grams that couldn't have been worth the value that they lost. Natsuo also tells them that Misaki has been trying to change, which makes the thug laugh and explain the futility of Misaki's actions, then kicks him repeatedly afterwards. Misaki tells the thug that Natsuo was not wrong, and he believed even Misaki had a future worth living for. The thug has had enough and pulls out a pistol to silence her, explaining that even if she goes straight, having Misaki as a loose end will be bad for him and his gang. However, he then points the gun towards Natsuo, claiming he will be first.
As Misaki pleads for him to stop, Masaki Kobayashi suddenly appears with Hina behind him. Kobayashi then single-handedly dispatches the group of thugs with little effort, telling them that the gangster lifestyle isn't for them. As the leader of the thugs says Kobayashi is screwed because back up is on the way, he is shocked to see more Yakuza hanging outside the door with the supposed "backup" already been taken out.
Once the ordeal was over, Misaki reaffirms her conviction to getting clean and making a future for herself. She also reveals she lied about spiking Natsuo's food with drugs, which Natsuo already knew. Although Natsuo wants to continue helping, Kobayashi tells him to let her go, saying that this is her fight. Kobayashi states that it's okay to run from what's hurting you if it leads you to a better place, but no matter where you go, you can't run from yourself. As Misaki goes on to live her life, Natsuo resolves to go back to living his own life as well.
- The name Natsuo means "summer" (夏) (natsu) and "life, living" (生) (o).
- Natsuo's surname Fujii means "wisteria" (藤) (fuji) and "well, mine shaft, pit" (井) (i).
- As the series starts, Natsuo is 17 years old.
- Coincidentally, just like his wife, Natsuo also has also been through a coma.