Summary
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, Ichikas friend Ruri is the ultimate sadist. Then there is Ichikas big-breasted quarter-Russian friend Marina.
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