A Paladin in Demon Slayer

Ace is drinking alone in his house while watching his favorite anime, Demon Slayer when suddenly his whole house began to tremble then a mysterious man wearing a royal outfit appears before him. The Man draws his sword and pierces Ace's heart. The last word that Ace's hear before he passes away is "This is the last chance we have, save the world we failed to protect." -- I don't own anything except my OC!. Support me on Patreon! https://www.patreon.com/MisterRen