Kata to Yubisaki

Kanzaki is a college student living alone in the house left by his grandfather. Soon after enrolling, he met his high school classmate Kirie again, and before long rented out an unoccupied room to him. Currently two men and a cat were living together, but when Kirie broke up with his girlfriend, they had sex. They didn’t envision such a relationship when starting living together, though…?!