During a record-breaking summer heat wave, a college student rents a room in Yuki’s home. He secretly watches the beautiful married landlady perform her daily yoga downstairs until she notices and invites him to join. As she teaches him, their lightly clothed, sweaty bodies repeatedly brush together, giving him an uncontrollable erection. Startled but intrigued, Yuki presses her damp body against him with a seductive smile, takes charge, and rides him so relentlessly that he creampies without thrusting once.