Also, are you sure your character is really a match? I'm looking at some things that set him far below Kaelin, for example his ordinary steel Katana, which would quite literally shatter into a hundred pieces the moment it got within five feet of Kaelin. I'm assuming you're going to be using the character in his all out form so he (I'm assuming a lot here) is able to use all magic types? He might have a decent chance against someone who could drop the energy of a sun on top of him with that flexibility, I suppose. Though a wave of Kaelin's hand is comparable to having a nuke dropped on your face.

If you misjudged how strong Kaelin was (I chose him when I was unaware what character you were using, based off the title of the intro post) I have other characters which are strong but with more weaknesses and set limits than Kaelin.