Yuria, the wife of her husband's colleague, is sick and has to take care of the children. Yuria, who has no children, is confused, but enjoys her new life. Even though he was still a child, the brothers with strange sexual knowledge all targeted the busty Yuria and were turned into a sow semen tank. What is the future of Yuria, who has been haunted by repeated sexual training every day and has become Masegaki's prisoner, awakening her womanly instincts?