あんばらんすスク～ルライフ

A former boys' school recently integrated into a co-ed high school. Shinya Sanada spent the beginning on his high school life in a hospital, so he arrives to what he thought was the boys-only dormitory a month late. What's waiting for him is his former childhood friend, although she's much more womanly than he remembers. Shinya decides to adapt to his new life at school. (Source: Anime News Network)