My Imaginary Boyfriend Is the Demon King

Pairing: A shut-in bottom who saved the world in his past life X an outrageously powerful Demon King top Gu Yue is a guy, a bit of a shut-in, and suspects he may have accidentally opened the door to a whole new world Someone tells him, "You are our little princess!" He thinks he must be dreaming, but "Hello, you have received an invitation to afternoon tea from a black magician." "Hello, your older brother has sent you the latest designer gown." "Hello, your Demon King... he, um, has unmet needs." Gu Yue: "…" Fine. This damn door won't close anymore! A baffled little skit: One day, Gu Yue fantasized about his ideal boyfriend. Tsk, tsk, look at that face, that waist, that body... Mmm! I could drool over him ten thousand times and it still wouldn't be enough! The next morning Gu Yue: "What do I do? I think I've fallen for the person I made up in my imagination." Friend: "You're overthinking things. Medically speaking, that's called delusions. I suggest you let loose a little." So Gu Yue went shopping, and then he saw the person he'd imagined. What the hell... meow meow meow? Is my condition... terminal? Premise: