MASM-007 My friend's sister seemed pure but was a fucking bratty bitch! She insulted me with polite language, saying 'You're such a loser,' shattering my adult pride and making me get reverse milked over and over. Yoshioka Hiyori

At a friend's house, I ended up alone with my friend's well-mannered younger sister, Hiyori-chan, and we decided to play a game together. 'The loser has to do anything they say' was the punishment game proposed, and I got flustered and lost. I wondered what kind of cute command she would give, but she smiled and said, 'Please get completely naked'... What? The one who seemed pure turned out to be an ultra-S type wearing a J-system facade! She kept making erotic demands in polite language, and the hellish days of being used as a live dildo for milking began.