Takahashi, an office worker who loves butts, is about to move and is going to look at a new apartment. Yayoi, the real estate agent, has an incredibly beautiful butt, and at first glance, Takahashi is completely turned on by it. While looking at the apartment, he keeps staring at Yayoi's butt, and eventually Yayoi finds him masturbating while looking at her butt. "I can't take it anymore!" he says, and attacks her in an empty room...