Tomoya's classmate who is cute and sweet on the facade but secretly is a narcissist. She dislikes Ichika, and to a lesser extent Tomoya (at least briefly) due to the former taking others attention off of her. It is implied that she has a crush on Kouki.

The story revolves around Tomoya Mizuhara, a 13-year-old boy who suddenly gains a big sister when his father remarries. 17-year-old Ichika is a little strange, and her affection for Tomoya is rather overwhelming, if not scary. On top of things, Ichika's friend Ruri is the ultimate sadist. Then there is Ichika's big-breasted quarter-Japanese friend Marina.<br><br>
Source: ANN


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The story revolves around Tomoya Mizuhara, a 13-year-old boy who suddenly gains a big sister when his father remarries. 17-year-old Ichika is a little strange, and her affection for Tomoya is rather overwhelming, if not scary. On top of things, Ichika's friend Ruri is the ultimate sadist. Then there is Ichika's big-breasted quarter-Japanese friend Marina.
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(Source: Anime News Network)

Mina Fujisaki