The brother of the man who divorced his wife due to being exceptionally skilled is taking care of his younger brother and sister-in-law for a few days. Soon after moving to Tokyo, Yukina was caught masturbating by her brother-in-law, who then advances on her. Her unsatisfied and heated body couldn't resist, and she ended up giving in to him, engaging in intercourse with her brother-in-law. From that day forward, Yukina's pent-up sexual desires exploded. She would sneakily suck her brother-in-law's dick right under her husband's nose, and as soon as he left for work, she would shamelessly engage in unprotected sex with her brother-in-law.
