START-440 International Age Verification Compliance Notice

Natsume is a strict female teacher who takes up the position of swimming club leader in order to rebuild it. However, friction arises between her and the club members who are used to the school's liberal atmosphere, and her assertive attitude earns them resentment. However, one male member makes a "certain move," and the tables are turned. Pushed to the limit both mentally and physically, Natsume finds herself at the mercy of the students...