Goshuushou-sama Ninomiya-kun

A high school student named Shungo lives in a large house. His sister, Ryoko, arranges for Mayu and her brother Mikihiro to move in with him. Mayu suffers from androphobia, and Ryoko believes Shungo can help her overcome it. As part of this plan, Mayu is required to share a room, a bed, and even bathing time with Shungo. Adding to the situation, Reika Hojo, the student-council chair, unexpectedly becomes their maid.