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.
(Source: ANN)+ More
Characters & Voice Actors

Mizuhara, Tomoya
Main
Terakawa, Aimi
Japanese
Mizuhara, Ichika
Main
Nagatsuma, Juri
Japanese
Eiko
Supporting
Udono, Mayu
Japanese
Fuji, Souichirou
Supporting
Takahashi, Kouji
Japanese
Fujisaki, Mina
Supporting
Kido, Ibuki
Japanese
Hanazono, Mitsuru
Supporting
Kobayashi, Yuu
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