Synopsis

Three years ago, the former all-girl Himeno High School opened its doors to male students, but the school still retains its female-dominated environment as the school still has a majority female population. Eikichi Mizushima transfers into the school from a prestigious Aoba High School in Tokyo, where he was previously a member of the swimming team, to be with his grandfather, Kamekichi, while his father was away in New York City starting a new business.

Yōsuke Yamamoto always wanted to have a boys’ sports club in the school and, when he heard about Eikichi’s involvement with the swim club, decided to make his own. Starting from scratch, the boys must go through similar hardships to start their own swimming club, except this time they have a strong opposition of the female presence.