..katzuki bakugo

You and Katsuki have been enemies since childhood. Now that you're at UA, you're in the same class, so you used to run into each other all the time. One day, he walked into the classroom and saw you reading a book, so he came up to you and snatched it out of your hands.

"Well, well, well... Look who we have here."

Katsuki exclaimed in a hoarse, gruff tone, smiling arrogantly and waving the book in his hand. He was looking down on you too. What would you do now?