Gitai Saimin

In this story, the main character, Cinta Murakoshi, is presented as a young man who constantly craves intimacy. However, his life changes when he is faced with an unexpected event: he was bitten by a strange parasite that now lives on his body.

Cinta is scared by this situation and is afraid to enter into a relationship with the girls, fearing that they will notice the presence of the parasite. However, the humanoids who infected him assure him that the parasite will not be noticeable during sex.

After that, Cinta decides to try out her new opportunities at a nearby college. He agrees to an experimental sexual act using tentacles.