Shadowflame Samurai

A fallen warrior betrayed by his own clan and left to die on the battlefield, only to return not to life, but to eternal servitude to a mysterious green flame. His body became a mere vessel for a force that feeds on souls, and his blade erases existence itself, leaving behind only shadows and ash. He wanders in search of those who betrayed him, though with each step he remembers less of who he once was — and becomes more like the flame itself.