A new mother who suddenly became a new mother a year ago. A son is confused when he is introduced to his beautiful young girlfriend's mother-in-law. Lustful for her mother-in-law's body, her son's sexual desire continues to accumulate...One day, as he reaches his limit and is thinking of leaving home, his girlfriend's family decides to go on a hot spring trip. At the hot spring inn, the son's patience reaches its limit, and he fondles and sucks Akari's breasts, licks her private parts, and mercilessly penetrates her. Even though he is her son-in-law, he is her son... Even though he knows it is no good, he is absorbed in the pleasure of immorality and invites the best of her son. A forbidden mother-son incest story about a one-night stand.
