This warrior seems to dwell in a world where dark energies such as the Satsui no Hado, and Psycho Power, thrive.

A demon who lives by taking on the souls of fighters who have been consumed by the Satsui no Hado. He is a being that feeds off dark energies, such as negativity and anger.
Apparently before he became a demon, he was a hero who once saved his village.

This time we're being graced with an additional comment from one of our superior officers!

Our concept for him was a badass with a sword hidden on his back! Originally, his sword attacks were a crisp one hit, but we didn't like how light that felt. So we tried making it multi-hit and that felt much better.