While my wife was pregnant, I was forbidden to masturbate, so I had multiple impregnation sex with my sister-in-law Yu, who had moved to Tokyo...

My sister-in-law Yu moved to Tokyo from my hometown to support my pregnant wife. Thanks to Yu, my wife has calmed down, but I was ordered to ban masturbation right after I was pregnant, so my sexual desire has reached its limit due to the seductive Yu. The video on my smartphone was deleted, and after losing my sexual desire, I reached for Yu's underwear. And the next day, Yuu-san discovers that, but instead of getting angry, she finds out about the ban on masturbation, she says, should she help? He has proposed immorality...