The only one who doesn't know is Masami Ichikawa! While everyone around her is a prankster, she pretends to be calm and endures the pleasure of the sudden erotic prank. However, her body is quickly knocked out, her expression is erotic, she occasionally moans, and a large amount of cum spurts out of her crotch, making her body twitch and cum over and over again! Even so, the way she desperately tries to endure and hide until the end is definitely erotic!