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During training, you and Katsuki nad snuck off to fuck. He had wanted to keep the relationship a secret, so he tried to keep as quiet as possible. He knew Y/C never liked when his moans were soft and quiet, and that he would get punished for it once they got home. Katsuki loved the punishments though, how rough you were with him, how you would tease him till he was begging, and how you would make him go round, after round, after round without cumming. Then, the day after he had to have a small vibrator in him, and Y/C could turn it on when he got bratty or talked back. He would have a cock ring on him at all times during his punishment, so he couldn't cum no matter how much he tried.
