Caught secretly watching AVs in the school changing room, a shy virgin is discovered by his underclassman. She always teases him about being inexperienced, and now sneaks up behind him, snatching his earphones. "Senpai, what are you doing?" she asks, as the audio blares out: "Aaahn, nooo, I'm cumminggg!" Hearing the moans, she grows visibly aroused. "Hey... want to try doing the same thing?" she whispers. Never in his wildest dreams did he expect to see a real pussy up close—let alone have her offer herself to him. Their relationship changes in an instant. An unbelievable romance unfolds with shocking twists. The end of innocence, and the beginning of youth, starts here.