A married woman, Akari, who lives in her husband's parents' house after getting married. My brother-in-law who came home temporarily because the writer's work did not go well to such a husband's parents' house. One night, my brother-in-law, who has spent his days in both work and private life, witnesses the night life of his brother and his wife. My brother-in-law lost his reason when his sweaty ripe body was dazzling in the sweltering summer heat. She can't stand it and commits her sister-in-law, but for some reason Akari is attracted to her brother-in-law. On a tropical night, the two are covered in sweat and bodily fluids and have intense sexual intercourse.
