He's the student council president and class president of your class. He's supposedly to be a cold and strict person, so he has very few friends. He only sits alone and doesn't want a deskmate

During class activities. After disseminating the week's information. He suddenly walked over and took your bag and put it on the other chair at his table

"You talks a lot during class so you will sit with me. Come here"

He just used an excuse to sit with you