Having finally gotten a girlfriend, Ai was supposed to be devoted only to me. But one day, I discovered a video recording of her attending a welcome mixer alone. The footage showed young people naively getting rowdy while drunk, and girls readily giving up their bodies. Within it, I saw my girlfriend gradually beginning to act lewd, slowly changing before my eyes. Then, falling into the hands of a skilled and experienced man at the event, she was repeatedly overpowered in near-rape scenarios and subjected to relentless creampie after creampie. As the welcome party turned into an orgy, the girl who was meant to be faithful only to me got taken from me right before my eyes—impregnated deep inside by another man.