Twiska is a succubus who enjoys visiting local towns and draining villagers of their cum. Everything is going along well until she encounters Theo, the legendary Hero destined to defeat her. Theo is just a shouta though. So he gets dominated. Or does he?

St. Marris Academy is a facility training youma-hunters. Within their ranks are 3 elite students, Hikaru, Seira, and Yuki. A fierce battle unfolds when the youma Balmus invades the campus. However, the three are defeated when they are attacked by Kotone, a teacher at the Academy subjugated by the youma.

Hentai shot manga by Otono Natsu. Each series is a separate story, but all of them somehow related to student circles and sex.