[Ace of Diamonds] the Devil's Standard Equipment Really Needs to Include a Princess, Right?

The legendary extremely violent and terrifying Demon King was about to celebrate his birthday. He was so bored that he thought about it and decided to find some new fun for this birthday. So, the NPC human princess—you, was captured. "Isn't it the evil dragon's idea to capture the princess? Shouldn't your standard match be a hero?" He readily agreed: "You are right, then from now on, I have appointed you as a brave man, so start a duel with me!" "?... Forget it, I'll just be a princess." A short fictional story. A work to celebrate birthdays. Concept: Demon King X Princess