My wife left Toru behind to go home for childbirth. It had been a while since I lived alone, and I was eager to play pachinko, something that had been forbidden since we got married... but suddenly, my sister-in-law Sena barged in. Apparently, she came to help Toru who was supposedly struggling on his own. While cleaning, Sena would show her chest and underwear as if provoking him, and Toru's sexual desire reached its limit. He fled to the bath, but Sena chased after him...
