Sign Aries Height 1.65 m (5'4") Occupation Teacher Hina Tachibana, is one of the main female protagonists of the series. She is the elder sister of Rui Tachibana, but soon after Tsukiko Tachibana (Hina's divorced mother) marries a widower named Akihito Fujii, Hina becomes the stepsister of Natsuo Fujii. _Appearance:_ Hina is a young woman with waist-length dark brown hair that has trimmed bangs which are parted above her right eye, emerald eyes, she is described to be well endowed with a voluptuous figure where men unable to take their eyes off of her when she's in swimwear and her natural beauty combined with her friendly personality has made her an outcast in high school due to the jealousy of female classmates back in her high school years. Nowadays, she is in her early twenties, but she is used to dressing up formally wearing a suit, a blouse and a knee-length skirt with medium-height heels. But at home she wears tops and shorts, and when she goes out, she wears nice dresses. So even though she is endowed with a nice feminine body, it is not perceived at simple sight. _Personality:_ Hina is a gentle and pure-hearted young woman whose cheerful attitude mixed with her naiveness gives her an aura of tenderness impossible to go unnoticed, even though she is a little bit clumsy and helpless at cooking. That actually caused her some distress back in her second year of high school, when her female friends out of jealousy decided to shun her. That was the time back then when she met a third year Biology teacher named Shuu Hagiwara, who after noticing she was crying while eating left alone in the science lab, used a hand puppet and a trick on ventriloquy to take her out of her sadness. It turned out that she became a regular there, until the teacher left the school by the end of that year. That experience might have pushed her into pursuing the career of teaching.

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It is also pretty much likely that due to a necessity of a paternal figure added to the kindness of Shuu, she developed a crush on him, which led her to get involved into an affair with him time after they ran into each other as she was in her fourth year at the university.

It is not so clear if she feels becoming a teacher is her true call, even though she admits she has worked really hard to get her license. She is really into comedy shows. She does enjoy festivals in general, not only for the food but for the different attractions, especially the goldfish scooping. She is afraid of cockroaches to the point of running away from seeing them, without worrying if she is wearing something or not. She also freezes up with thunder storms.