Sister Game

Original title: 鬼灯さん家のアネキ

Directed by Rikiya Imaizumi

Sister Game is a brother-sister romantic comedy that follows the daily life of Gorō Hōzuki, a high school boy with an older sister named Haru who is unrelated by blood. Gorō is mortified when the self-centered and lustful Haru plays pranks on him.