Kimetsu no Yaiba - The Demon pillar

Okuda Mitsuoki is the 10th pillar, the Acid Pillar. He was human, but as fate would have it, his humanity was taken from him. He had to hide from the other pillars, had to hide from himself, hide his claws and teeth and the monster that he has become.

Note: I don't own any of the characters in this fanfiction, I only own 'Okuda Mitsuoki' and the plot