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Rui Tachibana (橘 瑠衣, Tachibana Rui) is one of the main female protagonists of Domestic na Kanojo. She is the younger sister of Hina Tachibana, but soon after Tsukiko Tachibana (Rui's divorced mother) marries Akihito Fujii (Natsuo's father), Rui becomes Natsuo Fujii's step-sister.

Appearance[]

Rui is a beautiful teenage girl who stands at average height.

She has short blue hair with bangs parted to the left, sharp magenta eyes, fair skin, and a slender figure.

More often than not, she's usually seen with a frown on her face, but after warming up to Natsuo and other people she's met in school, she becomes more friendly and is seen smiling.

Personality[]

At the beginning, Rui was an aloof and blunt girl who was hard to read emotionally. Her standoffish personality made it difficult for her to socialize; the first time she appears in the story, at a mixer, she didn't do much to interact with others.

Once someone sees through her initially cold demeanor, Rui is actually a very kind and loving girl throughout the series. In spite of this, it was hard at the beginning for her to express her feelings towards people she genuinely liked. She is very supportive of people she cares about in spite of their flaws and even if their desires conflict with her own.

Rui has a tendency to pout when things don't go her way, though Natsuo finds this quirk of hers adorable. Rui is also surprisingly easy to embarrass in spite of her stoic personality. When Natsuo lists all of her behavior he finds cute, especially to other people in front of her, she becomes overwhelmingly flustered.

During the story progression, Rui goes through a lot of change. Throughout the story, she opens up to people around her, becoming more emotionally expressive and more social, and she realizes her own ambition to become a chef and begins to reach towards that dream.

Background[]

Rui is the younger of two daughters of Tsukiko Tachibana and her ex-husband, whom she divorced after he admitted to infidelity. Rui grew up having to deal with her mother's constant disparaging talk about her father, which upsets her greatly. This changes for the best once Tsukiko meets Akihito Fujii.

Rui felt like she grew up in the shadow of her sister, with Hina Tachibana seemingly appearing more attractive and outgoing. She also feels insecure about Hina's body developing faster than hers when they were relatively the same age. Nevertheless, she loves her sister dearly and is not afraid to be blunt with her. Both sisters are terrified of thunderstorms, but Rui is often comforted by Hina during those moments.

Rui goes to a high school on the other side of town up until the events where she meets Natsuo Fujii.

Character plot[]

First encounter[]

At the start of the story, Rui was invited by her classmates to attend a mixer. This was her first encounter with Natsuo Fujii, who was also forced to go. Likely due to the fact that they both were not used to that kind of situation, Rui and Natsuo left the mixer early with Rui wanting to ask him for a favor. The two end up at Rui's place, which is empty, and they head to her room.

Rui asks Natsuo to have sex with her - not because she likes him or wants a boyfriend, but because she wants to experience it for herself and is tired of people speaking to her condescendingly about it. After Natsuo gives an incredulous reaction, she explains she specifically chose Natsuo because he was obviously a virgin and didn't want someone experienced to take advantage of her or claim her virginity as a prize. Natsuo reluctantly accepted her reasoning, which led to their one-night stand.

Remarriage[]

After that night, both never met again until they found out that Rui's mother and Natsuo's father, both widows, would be marrying each other. Natsuo was especially struck dumb because his crush (Hina Tachibana) and his first in bed (Rui) would become his step-siblings. As their visit to the Fujii residence was almost over, Rui acknowledged her mother's remarriage and told Natsuo that, however awkward it may be for the two of them, she supports it because being with Natsuo's father has made her mother happy. Natsuo is then left to decide for himself whether he would support the marriage.

Rui, her sister and Ms. Tsukiko (Hina and Rui's mother) moved into the second-hand house Akihito Fujii (Natsuo's father) bought the next week. Natsuo and his father arrived later with the movers and all of the furniture and belongings. In the house, Rui eventually crossed paths with a nervous, agitated Natsuo. She asks him to forget that anything happened between the two of them and interact with her normally. A little later, after finishing house cleaning, the family gathered for dinner.

After dinner, Hina took a bath, after which she left the bathroom with nothing but a towel and panties on, prompting her mother to tell her off. After Hina put on some clothes, she began drinking and Rui used the bathroom next. As she left it, she saw Natsuo kneeling at the sofa, attempting to steal a kiss from her drunk sister, causing Rui to believe that Natsuo was a carefree, womanizing type.

Friendless transfer student[]

The next day, Rui transferred to the same school as Natsuo Fujii, joining class 2-2 (year 2, class 2). She was surrounded by her new classmates, all wanting to get to know her, but her shyness and brutal honesty prevented her from making any friends. After hearing about there being a transfer student, Natsuo entered the classroom with insane bed hair due to getting up late. As Rui was about to tell Natsuo about his forgotten lunchbox, revealing their sibling relationship, Natsuo asks to talk after class.

As they arrived at the backside of the school building during the break, Natsuo asked her about her sudden transfer and what to tell the other students about them, which caused Rui to assume that their current relationship was bothering him. She took this as a sign to ignore Natsuo and tells him she will, ending the conversation abruptly.

At lunch, Natsuo became worried seeing Rui eating alone and decides to sit with her, asking about why she was eating alone despite all of the classmates surrounding her at the beginning of the day. Rui told him about her past and her jealousy of her sister's extroverted, friendly personality. She had even gone to the point of copying Hina's way of speaking, though ending up shy and unapproachable. She suddenly brought up his messy hair again and offered to fix it for him.

Yet Natsuo couldn't stand Rui being unable to make friends and decided to help her out by doing what he called "Communications 101", essentially some impromptu conversation in situations where one could make friends. This plan of his goes terribly, quickly spiraling into a comedic hostess club roleplay skit. Their short skit comedy leads to a burst of laughter inside their room and classmates begin to open up to Rui again. However, Rui remains shy; her idea of Natsuo being a "carefree guy going after any woman" is shaken, though.

While asking Natsuo about his intentions behind the attempted kiss, Rui reveals to him that Hina was going through problems regarding her boyfriend.

Hina the Mistress[]

By a few days after Rui's transfer, the family had quickly become used to living together and it seems like life together will be smooth sailing; however, that is not the case, as Rui knows about Hina Tachibana's (Rui's elder sister) affair to an adulterer, which is quickly also found out (albeit through another source) by Natsuo.

Due to this, Natsuo Fujii left one day to live at Fumiya Kurimoto's apartment for a while. This situation caused their parents to panic because they thought Natsuo did not support their remarriage. However, Rui notices her sister's worried expression and knows that Hina had something to do with it.

The next day, Rui searched for Natsuo in pouring rain. Natsuo saw her at the window of Fumiya's apartment, and she asked him to allow her to stay with him as well, being quickly shot down by Natsuo. Without any hesitation, Rui left the apartment to search for an internet cafe to stay in; however, she was interrupted by Mrs. Kurimoto (Fumiya's mother) near the apartment entrance.

Fumiya's mother welcomed Rui to their apartment. Rui was also invited to take a bath, and although the arrangement was very sudden, she was prepared beforehand brought pajamas for staying the night.

Fumiya came home to apartment only to be surprised seeing a girl in his room in addition to the freeloading Natsuo. Soon after, his sister arrived with the same reaction. After several minutes of chatter, Natsuo and Rui summarized the situation, and their information about Hina's affair to a married man. Not knowing what they had to do in order to determine Hina's lover, Fumiya decided to make a master plan and together they created a descriptive and arranged blueprint to catch the adulterer.

When Natsuo and Rui returned home the next night, their parents sat in the dark living room gazing at their divorce papers, surprising the two as they entered. Their parents thought it was their decision that brought this upon them, although their kids denied it. Natsuo was slapped (lightly) by his worried father for not opening up about his problems to family. The commotion was interrupted as Hina came down her room, tears filleing her eyes, and apologized to Natsuo, slightly confusing their parents.

Their plan began the next day. Late in the afternoon, Rui and Natsuo stalked Hina to a busy street and into a stand-up bar, thinking her lover would appear but instead waiting for hours as she drank her problems away. The next day, they followed her once again as she made her way in a hurry, only to be dismayed seeing that she was simply watching a comedy show. Their next attempt was also a disaster when they assumed that Hina would be meeting her lover; she turned out to be meeting a girlfriend. Lastly was the Plan "P", or likely, Plan "Phone". Rui snatched her sister's phone while she was taking a bath. Hina's phone rang and a name Shū Hagiwara popped up on the screen. Taking the call, Rui tried to mimic her sister's voice, yet her shyness prevented her from being able to say anything of use and she gave up.

All their efforts were worthless, their plan to find Hina's lover was rubbish, and the two reported to "Captain" Fumiya at L'Amant. However, that was the moment when Hina and her lover decided to show up together, happening to be at the same cafe where Rui, Natsuo, and Fumiya were discussing their plans. Without any hesitation, Natsuo urged them to break up. Tensions between both sides rose and L'Amant's atmosphere became intensely charged until the owner intervened, asking them all to head into the back of the cafe.

The four sat together, with Hina and Shuu on one side and Rui and Natsuo opposite. The owner prepared L'Amant's special Neapolitan spaghetti for all of them, telling Natsuo that "the best way to converse is with a stomach filled with food". Shuu started the conversation by asking Natsuo if he'd be happy if his divorce went through, adding that his love for Hina is serious and not just for pleasure. While Shuu was reassuring that his divorce was almost complete, Rui had heard enough as she threw a glass of water into his face and ran out of L'Amant. Natsuo followed Rui outside.

Rui ran as fast as she could, with Natsuo following her. Eventually, he called out to her to stop. She stopped, and told him she would have attacked Shuu if Natsuo couldn't, which prompted Natsuo to suggest heading back and beating Shuu up. At this point, her anger over her beloved sister being toyed with caught up to her, and with tears flowing down her face, she turned toward Natsuo and cried into his chest, locked in a comforting embrace.

The next day, Rui went to the bathroom to wash her face, with Natsuo walking in surprised that she had messy hair just like his. She asked him if her eyes were still puffy from crying and thanked him for comforting her. Both of them went to the living room and saw the house calendar with a large drawn flower with circling the 12th of May; Mothers' Day. However, due for running into many places stalking their sister, they never planned any present to give.

Rui and Natsuo were asked by Hina if they would join her in buying a Mother's Day present. Natsuo declined and said he would get something on his own as he is going to visit his mother's tomb, and after he left, the sisters were told where he was going by his father. Natsuo later arrived at the cemetery with a bucket and a dipper, with Rui and Hina appearing behind him with presents to offer for his late mother. It was during this tomb visit that Hina announced her breakup with Shuu, leading to the first time Natsuo has seen Rui truly smile.

Etymology[]

  • The name Rui means "lapis lazuli" (瑠) (ru) and "clothing, garment" (衣) (i).
    • It can also mean "tears".
  • Rui's surname Tachibana means "orange, tangerine" (橘).
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