Oneechan ga Kita

Synopsis

Oneechan ga Kita centers on Tomoya Mizuhara, a thirteen-year-old boy whose world shifts after his father remarries, introducing a new seventeen-year-old stepsister named Ichika. Ichika possesses an eccentric personality and shows an excessively strong affection for Tomoya that approaches an unsettling level. Adding to the complexity is Ichika's friend Ruri, who displays highly sadistic inclinations. Also included is Marina, a friend of Ichika's who is one-quarter Japanese and noted for her large bust size.