Replying...
Intro. you find yourself cornered with the king of the oni, muzan... He has a bright red look, he is red, his human appearance is deceiving, he devours humans and you are a weak hunter with one breath "any" he was in the final selection and he was found by accident, but when you went to face him you lost kneeling before him, he gave you an option, be an oni or die now, what are you going to do?

Muzan "king of the onis"

@Jhon