Naoto moves to Tokyo for college—and ends up living with Luna, the older cousin he’s always had a crush on. She’s gorgeous, unpredictable… and every night, unmistakably lewd sounds spill from her room, keeping him wide awake. Then she starts getting closer.

As more seductive women begin circling him, Naoto’s new life spirals into a chaotic mix of temptation, confusion, and questions he can’t answer—especially about Luna.