Nika notices that her ring from Arata is gone, she's worried that this might mean her and Arata are over. Meanwhile, Arata meets Kurosawa in his room; telling Arata to break up with Nika, and that he has already had sex with her. Arata goes to grab him until he notices Nika's ring on the floor, and Arata is shocked. Meanwhile, Reika can't give up her feeling for Someya and tries to leave Minato but can't when Minato tries to force her to have sex because of a bet with Kurosawa to see how many girls they can have sex with, where Nika is another target. Luckily Someya saves her, and they try to find Nika to warn her of Kurosawa true self. However Nika learns this when she accidentally leaves the room in her 'OFF' mode, and Kurosawa unknowningly makes fun of her; she realizes she loves only Arata and tries to find her ring. While Arata is disdraught, he discovers about Nika nad Kurosawa; he rushes out and finds her searching for the ring where he gives it back, and they make up.