I've Become a Devil, You Want Me to Be a Knight?

[Sword and Magic] [Funny and Easy] [Single Heroine] [Invincible] [Knight] [Bard] [Non-Soul Wear] Good news: After traveling twenty years, Wolf finally went from being an unlucky werewolf who was chased and killed by the whole world, to breaking through the dungeon, and became a feared demon king. From then on, he lived a happy life with his wife and children... Oh no, it was a beautiful life with a group of subordinates and a magic city. Bad news: A plug-in that is twenty years late - [The Greatest Knight System in History] is here. System: "Dear host, join me as a partner of justice and defeat the devil of all evils!" Wolf: "I am the devil! You want me to defeat myself?" Looking at this secondary system that would "do justice for heaven" if they disagreed, Wolf wanted to let it get out of his mind. But when he saw the novice compensation given by the system, he admitted that he was moved... "Well, who would think that he is too strong?" Wolf looked at the noble percentage bonus and fell into deep thought. In this way, Wolf and his chuunibyou system started an outrageous knight adventure with the cheap bard picked up halfway. His behavior is overbearing, and he cannot convince others with his virtues, so he convinces them with his physics; the way he appears is strange, his physical body breaks the sound barrier, and is comparable to a human-shaped meteor; his strength is extremely powerful, but he never hesitates to help the weak people. Years later, when the bard sings his story, he will introduce it like this: "Next is the king of demons, the white wolf that tears apart the earth, a warrior comparable to the gods, the conqueror of the forbidden land, and the greatest knight in history - Wolf!