I Became That Scummy Boss Obsessed with Card Draws

One day, he wakes up to find he's become a man-eating monster: a demon, and apparently someone with an incredible identity. Red eyes, black hair... Isn't this the legendary Muzan Kibutsuji?! As the Demon King, the protagonist spends every day nervously keeping his secret identity under wraps in front of the Twelve Kizuki. Help me! Thankfully, he discovers that he seems to be able to walk in the sun. [Yes, I'm that legendary SSR!!!] What??? So he just goes around eating and eating in the body of the Demon King. Wisteria flower cakes are delicious today, too, owo! [The characters belong to the original author. Any OOC is on me. Please respect the author; I don't need writing advice. I don't care what you think, only what I think. The CP is Schrodinger's couple, so feel free to place your bets. If anything differs from the original, it's my own headcanon.] Theme: Proposals should be made with wisteria flowers.