It's summer. Summer's suppose to be about beaches, babes in bikinis, and having hot sex with them.

Sadly for Taiyou Kaisha, his plans for a hot summer vacation (after succeeding through the hell of entrance exams for Tokyo University) had gone to bust.

He had to be a gopher for his aunt's volleyball team.

An all-female volleyball team. With them basically wearing bikini's.

Some of them in need of an energetic young man (which shouldn't be a problem for a horny young man like Taiyou).

A man to help them with their alcoholism and emotional baggage (which is a problem for Taiyou).

All Koikatsu cards here: https://db.bepis.moe/user/5279