The main protagonist of the story who lost his perverted spirit to Lisara, and now struggles to regain that spirit back. Ryousuke cannot enjoy himself while living with the Death Goddess Lisara under a contract, because he gave up his erotic spirit under the deal. He cannot get excitement from watching girls and wonders if his adolescent days are over. Also, he learns from Lisara, that he will die in three months and in return of his help, she will try to change his fate.
At the end he and Lisara start dating.