After masturbating in the dead of summer, the mother was caught off guard and asleep when her son secretly penetrated her. The intense, passionate intercourse, beginning with her feigned sleep, culminated in a passionate climax. (Reimi Saegusa, FERA-190)

On a night when her husband was away on a business trip, Reimi masturbated to relieve her loneliness and fell asleep. Her son, Yusaku, secretly watched this scene and couldn't help himself. Yusaku approached the sleeping Reimi and began to secretly touch her body. Reimi soon realized something was wrong, but the hot summer night made her lose control of her reason...