Because of upcoming exams, Hina Shirakawa and her boyfriend Tomo are the only two members left in their high school swimming club. Their job now is to bring in new members or the club will be terminated. With the best of intentions and in hopes of attracting as many people as possible, Hina distributes a recruitment poster displaying a rather revealing picture of herself.

Hina soon finds herself alone with several people who have gathered in the clubroom after seeing the poster. Things start to take a strange turn when the newcomers begin touching her in inappropriate places.

[Written by MAL Rewrite]