Horny older sister Rui Shinomiya secretly steals her little sister’s boyfriend for risky daytime trysts. Her voluptuous, slender body is pounded raw and flooded with creampies, pushing her over the edge. When the younger sister catches them, the older one boldly pulls her in, turning the affair into a forbidden threesome. Both curvy and youthful bodies are taken in turn until they collapse together, eyes glazed in shared ecstasy.