In order to support my pregnant wife, my sister-in-law Yu came to Tokyo from my hometown. - Thanks to Yu, her wife calmed down, but I was ordered to ban masturbation immediately after her pregnancy, and her libido was reaching its limit because of the bewitching Yu. - The videos on my smartphone are deleted, and I reach out to Yu-sans underwear when I lose her libido. - And the next day, Yu-san finds out about it, but when he finds out about the ban on masturbation, should he help instead of getting angry? - And I made an immoral proposal ….