I finally started living alone, but my university is too close so my room has become a hangout for friends. Today again, my friend and his girlfriend "Himari" are staying over, stealing my precious alone time for masturbation...! However, one day, Himari who broke up with her boyfriend comes to my solo room... Unable to bear seeing her with nowhere to go, I involuntarily say "Why don't you stay—". Even though I longed for alone time, once I think of Himari I want to be with her forever, and we end up having sex until morning. And even when my parents come home, we can't hold back...!