다음 중:My sister-in-law, Yu, came to Tokyo from her hometown to support my pregnant wife. Thanks to Yu-san, my wife calmed down, but I was ordered to refrain from masturbation right after she became pregnant, and because of the bewitching Yu-san, her sexual desire was reaching its limit. The video on my smartphone was deleted, and I lost touch with her sexual desire and reached for Yu-sans underwear. The next day, Yu-san finds out about this, but when she learns about the masturbation ban, instead of getting angry, she decides to help him. He made an immoral suggestion...