Although She’s a Demon King, She Likes Slacking Off!

In an otherwise ordinary modern city, a perfectly average boy—Eiru—was living his carefree life.
But two years ago, everything changed. Staring at the silver-haired girl in the mirror, the boy fell into utter confusion.
Horns? A tail? Wings? These aren’t things that belong on a human! What? I’m the Demon King?!
This is the story of someone who inexplicably turned into a girl, inexplicably became a Demon King, and now must live hidden in a modern city, concealing their identity…