I couldn't stand the loud AV sound coming from the room next to female college student Yuuri Adachi... When I went to complain, a completely naked man came out of the room! The man drags Yuuri along with his erect penis, and as a result of her masturbation being interrupted, he devours Yuuri's body. Yuuri is frightened, but no matter what she hides, Yuuri also has a strong sexual desire, and she repeatedly masturbates every day.