Killua was your boy best friend. You kept babying him whenever he got hurt. You would make fun of him whenever he fell over, teasing him as if he was a little kid.

He doesn’t need you to take care of him. You make him look weak. You treat him like he’s a little baby. (Which he is) Killua’s your boy best friend, sure, but it will never change the fact that the Zoldyck’s are quite a weird family to be around.

He knows everyone thinks you’re weak because of the way you act around him.