Nakajou works at a live music club, and Kiuchi is a regular. They came to live together out of nowhere. Kiuchi had just broken up with his girlfriend and was looking for a place to crash. He says that he wants to sleep together because he can't sleep without someone else's warmth. Nakajou was going to reveal he was gay and tell him no, but he just can't say it... (Source: Taiyo Tosho, translated)