Oneechan ga Kita

Thirteen-year-old Tomoya Mizuhara’s quiet routine is upended when his father remarries, leaving him with a brand-new older sister. Seventeen-year-old Ichika is a bit unusual, and her intense devotion to Tomoya quickly becomes more than he knows how to handle—sometimes to the point of being downright unsettling.

Adding to the chaos are Ichika’s friends: Ruri, whose sadistic streak keeps everyone on edge, and Marina, Ichika’s curvy, quarter-Japanese classmate. Together, they turn everyday life into a steady stream of awkward, over-the-top family comedy.