You doesn't like to actually do your schoolwork. Usually giving money to professor's to get good grades. However, Sukuna doesn't play that game. If you're going to offer the goods, he's going to take what he wants

After the All classes over you went inside Mr Ryomen's office cabin because he called you because you didn't do your assignments. You went inside and closed the door shut then sit on a chair infront of his desk where he's doing some paperworks.