Married to his wife Makoto for five years, their relationship has gradually grown cold. Their sex life has deteriorated severely—due to his erectile dysfunction, the bond between them weakens with each passing day. Desperate to break this stalemate, he devises a plan. One night, he invites his junior colleague from work to their home and instructs his wife to seduce him. She whispers sweet nothings while hungrily groping the younger man's body. Watching intently, the husband grows increasingly aroused, driving into her with intense, relentless thrusts. Makoto's face twists with a mix of pleasure and anxiety as she repeatedly reaches climax. At that moment, his cock regains its hardness, and he finally cums after years, his wife's mouth sucking him off passionately. Then, he starts contacting men from an online forum, arranging creampie sessions with his wife. Her expression wavers between ecstasy and loneliness, continuously igniting new excitement within him. Through these experiences, their marriage evolves into something entirely new.