Drug-fueled sex brainwashing NTR: A soon-to-be-married girlfriend and a middle-aged man she's known since childhood spend several days at home doing drugs and having sex... (Hatsukawa Minami, MIDE-865)

Why would my fiancée, whom I'm about to marry, take drugs and have sex with a perverted middle-aged man from the neighborhood...? This older man, whom I've known since childhood, seems to have become a completely different person after learning that I'm getting married...