Summer vacation with sister-in-law ③（7p） (Patreon)

He runs into his sister-in-law naked in the bathroom.

She doesn't mind being seen naked if it's her brother.

義妹が浴室で裸でいる所に鉢合わせしてしまう。

義妹はお兄ちゃんなら裸を見られても構わないらしい。