In school trip to the nudist beach!!

When a foreign teacher announces a class trip to a nudist beach, with one rule: male students are not allowed to get erections, that's the setup, and it commits to it completely. Suomi-sensei pairs up students to help each other 'manage' the situation, and naturally, Naotatsu Nagato is the first guy to break the rule — repeatedly. The story follows him and his classmates as they navigate the chaos that unfolds from there. This 2-episode OVA from Studio Seven, based on the manga, leans into the absurdity of its own premise rather than ignoring it. The beach setting and the rule mechanic give the whole thing a loose comedic structure that separates it from a generic hentai setup. Character interactions actually carry some weight here — the pairing system creates specific dynamics between students that the story builds on rather than just using as window dressing. If you've seen Resort Boin and liked the vacation-setting format, this scratches a similar itch. Fans of Baku Ane: Otouto Shibocchau zo! who appreciate when hentai at least tries to have a consistent premise will find something to enjoy here too. It's not reinventing anything, but the nudist beach rule concept gives the writers enough of a framework to keep things coherent across both episodes. Short runtime, clear premise, does what it sets out to do.