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

Taiyou Kaisha wants to enjoy summer before he ends up inadvertently becoming another victim of a private academy's "class system." Sadly, he has to be a "gopher" for his aunt's beach volleyball team.

In order to keep his libido from going out of control; Taiyou's aunt, Yamada, requests help from the team that she coaches. Toi, one of the aces in the team, simply needs to walk down that dark path of alcoholism.

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