Ibitsu (okada Kazuto)

The protagonist, Hideo Aiba, just like in other mangas, is a loser. He is a part of a club at school called the "Roman Club" filled with weirdos and otaku freaks, one of them being a leg fetishist who plays with a doll, one of them being a voyeurist fetishist, and another one being an anal fetishist. One day a girl named Kurumi Sahana, transfers to his class. On first sight he falls for her. The same day she checks out the roman club and thinks it's really funny and interesting. On the first day there she finds a book called "The Secret Book Of Masturbation" and then she asks the main guy to...

Tairaku is a high school teacher in a school full of bad apples, and as trying as his life may already be, a chance meeting with a young girl is about to throw it into chaos. His home life, his school life, and his tentative relationship with a fellow teacher whom he has a crush on, are destined to teeter on the brink, thanks to this one young student.