This was a cool picture done by my bro, Vector-Yamazaki. And though he meant well when he made this, Amaterasu isn't exactly meant to be used on the user's own body. But disregarding how it's supposed to work, the picture itself has a nice badass quality to it. If nothing else, no one can touch Rinji without incurring those same flames.
And from the looks of it, he took some hefty battle injuries in the process, as those purple marks look like bruises. No wonder he's pissed and using Amaterasu like nobody's business. XD
Anyway, thanks again!