A new mother suddenly appeared a year ago. A son is confused when introduced to his young and beautiful stepmother. His lust for her body grows by the day... Reaching his limit, he considers leaving home one day when the family decides to go on a hot spring trip. At the hot spring inn, the son's restraint reaches its limit as he gropes and sucks on Akari's breasts, licks her genitals, and mercilessly inserts himself. Although she is his stepmother, knowing it's wrong, she is overwhelmed by forbidden pleasure and welcomes his penis herself. A one-night mistake of●taboo mother-son incest story.
