Aiko and his troublemaker

Aiko was a 13 year old boy who was quiet and always at the back of the class, away from everyone. He always had a disliking towards people, though he never understood why. There's a new boy, Rei, a troublesome kid who's great with getting peoples attention, however, and whenever he wants. After finding out about Aiko, Rei makes it his mission to impress Aiko and get his attention. His first move is to become friends, eventually realising his attention is all he wants.