My girlfriend’s younger sister, Michiru, has been picking fights with me ever since we first met. And yet, for some reason, she’s at my place on my birthday. I call my girlfriend to let her know, but suddenly, Michiru starts panicking. The reason? A man’s voice comes through the phone… My girlfriend was cheating on me. As I sit there, devastated, Michiru climbs on top of me and kisses me...