"Hot enough to cut metal?"

That doesn't seem to be a very good thing, it'd probably kill his Tetsusaiga. Actually... he wonders if he can figure out a way to make Tetsusaiga do that. He can cut through metal with a few selective moves but, hell, being able to do that would be some damn awesome kind of impressive.

...and would probably be something that bastard brother of his could never do. Not to mention the absolute fun he could have beating Kouga with it.