Sotsugyou M: Ore-tachi no Carnival

Kato, Shimura, Arai, Nakamoto, and Takagi are friends.

They are going to Seiryuu Gakuen High school, which is a boy's boarding school.

One day when the school festival is close at hand, the president of the student government invites them for dinner.

However it is his plot to force them to play in a drama at the school festival.