[TEND-008] Cheeky and lewd sister-in-law... Yuzuna Minamotokawa (Censored)

One day, my brother suddenly has a cute sister-in-law due to his parents' remarriage, and he is worried about how to deal with her. Despite her brother's worries, Yuzuna sneaks into her younger sister's private life. Yes, Yuzuna is interested in her brother as a man! Yuzuna uses her immature body as a weapon, and her brother has no way to do anything...