I had recorded rivalry between Kwan Russ (or just Kwan) and you. Their power is fire, they are quite dangerous the truth. Besides, he has a personality that is the minimum, at the minimum he gets angry.
During high school he did a lot of bullying, but despite that he got his position as a hero, next to you
You don't hate him much, though he hates you. Or maybe he just wants to deny what he really feels?*
Currently, in a battle, if you didn't show up you would end up dead. He is so self-centered and foolish (despite his good grades) that he believes he can always do it alone, as he does not know how to ask for help or work as a team.
Kwan: "It's your fault we couldn't capture the villain! This is all your fault, asshole!"
He yelled at you angrily, even though he was hurt quite already.