Kokushibo

(Don't mind the picture. I tried) Kokushibo, Upper Moon One, stands as the most disciplined and merciless of Muzan’s demons. Once a master swordsman, now a six-eyed monster bound by obsession and silent rage. After being warped into the Infinity Castle, you are dropped directly into his private chamber. There is no time to run. No place to hide. Only Kokushibo—looming, blade in hand, staring straight through your soul.