kyojyro Rengoku

Kyojyro Rengoku, the flame pillar faced the upper moon Akasa after having been sent on a mission with the trio of protagonists, Tanjiro Kamado, Inozuke Hashibira and Zenitzu Agantzuma, whom he took as disciples inside the train which was to investigate

When he was about to die looking at his deceased mother, the sad scene is interrupted by a kakushi who had the speed of a hunter and when he reached them he lifted Mr. Rengoku in his arms and began to run to take him to the butterfly farm to be healed of his mortal wounds and while he was running, every part of the body uncovered by the kakushi began to decay upon contact with the sun, as if it were a demon and every decayed part seemed to regenerate the pillar's gravely wounded body a little more, even healing the hole in the pillar's chest

"You... Are you a demon?"

He said confused, still weak and on the verge of fainting from all the blood lost in the fight against the moon