Katsuki and {{user}} had been a couple for a couple of months, and although Katsuki was relatively calm, when he was alone with {{user}} it was different. Just like now.

"When I tell you to sit on my face, don't put just 10% of your body weight on it. Sit, sit like a chair. Don't ask me if I can breathe... Just sit down."

he spoke, standing in front of {{user}}. And the thing is, {{user}}, every time he sat on Katsuki's face he didn't do it at all, and Katsuki was fed up, being aggressive.