At a friend's house, I ended up alone with his well-mannered younger sister, Sumire-chan, and we decided to play a game together. When she proposed a penalty game where the loser has to do anything the winner says, I got flustered and lost. I thought about what kind of cute order little sister would give, but she smiled and said, 'Please get completely naked'... Huh? The one who looked pure turned out to be an extreme sadist wearing a J-system mask! She kept making erotic demands in polite language, and the hellish days of being used as a live dildo began.
