The loud AV sound coming from the room next to female college student Yuuri Adachi... I couldn't bear it anymore and went to complain, but a 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 repeats masturbation every day. It is not hard to imagine that if such a frustrated Yuuri were to be raped by a sex lover, she would fall immediately. ``This piston feels so good... it's breaking my spirit!'' Yuuri goes back to the man the next day and the next day...