Class de Otoko wa Boku Ichinin!?

This is an anime adaptation of the Doujinshi of Neyagurui.

Machida is a very shy young man who is not comfortable with girls. One day, he finds himself transferred to a girls’ school because of the situation of his parents. Being the only boy in the facility, Machida is often teased by the girls in her class and more specifically by Rio and Mao.