Aika and Shinichi begin living together, thinking seriously about marriage. When moving in, they meet the building's caretaker—a friendly yet strangely unsettling man—who offers to help. One night while Shinichi is out, Aika invites the caretaker into their apartment to fix a plumbing issue. He gives her Western sweets as a gift, but the moment she eats them, she's overcome by a strange drowsiness. When she wakes up, she finds the caretaker pressed tightly against her, both drenched in sweat. From that first moment of contact begins an intense, fluid-filled sex session. As pleasure overwhelms disgust, Aika's body and mind gradually fall under the caretaker's spell in a deep, sweaty creampie-filled NTR betrayal.