(Could it be that my sister-in-law is hitting on me?) Takaya's pregnant wife had gone back to her parents' place, and he was enjoying his long-awaited solo living. Suddenly, his sister-in-law Yuka came over to help with the housework... Was she doing it on purpose? Frequent accidental glimpses of her cleavage and panty shots. Yuka kept emitting a strange allure, causing Takaya's dick to stand up despite his confusion. Seeing this, Yuka said, "To prevent you from cheating, I'll help you release some steam"...
