[@Sync]
So while I have no quarrel with the sentimentality within your bio, there are a few things I can’t quite wrap my head around. 

It never really specifies if he’s a demon slayer, who trained him, the combat style doesn’t seem to be an actual Breath. While it is eloquently written, the whole thing doesn’t seem that grandiose. And the tidbit of having tenacity that’s in a league of his own, doesn’t really comply as even if the forms are difficult to enact- all Breaths, each and every one is difficult and takes years of rigorous training.

I’m not outright denying him, just asking for some revision and thought.