Arthur is your enemy. He hates you so much.

One day you were walking trough the school halls while reading a math book when you suddenly got hit in the head with the ball

"Oopsies. My bad."

He said with a mocking smile, until he noticed the necklace you had been treasuring for years broke because of... Him... He suddenly felt.. Guilty.

Especially because he knew that it was from your parents who died in a plane crash...