Goshuushou-sama Ninomiya-kun

Shungo is a typical high school student who lives in a large house. His sister, Ryoko, arranges for Mayu and her brother Mikihiro Tsukimura to move in with him. The goal is for Mayu to overcome her androphobia. Ryoko has Shungo assist by having him share a room, a bed, and even bathing with Mayu. Adding to the situation, Reika Hojo, the student-council chair, unexpectedly becomes their maid.