Meguri, a married woman who has been married at her husband's parents' house but has been cheating on her many times and has been distrustful. A brother-in-law who came home temporarily because his work did not go well to his husband's parents' house. One night, his brother-in-law, who has spent his days in agony both at work and in his private life, witnesses the night life of his younger brother and his wife. The sweaty and ripe big breasts of the sweltering summer heat were dazzling and my brother-in-law lost his reason.