MASM-018 My friend's little sister looks innocent but is a fucking bratty bitch! She insulted me with polite language, saying 'You're such a loser,' shattering my adult pride and making me cum over and over again in reverse. Yura Kana

At a friend's house, I ended up alone with my friend's well-mannered younger sister Kanachan and we decided to play a game together. When she proposed a penalty game where the loser has to obey any command, I was taken aback and ended up losing. I wondered what kind of cute order she would give, but she smiled and said, "Please get completely naked"... What? She looked so innocent, but she was actually a super S with a J-system facade! She kept making erotic demands in polite language, and my hellish days of being used as a live dildo began.