Qian Xue transmigrates into the perfect beautiful girl, Kokomi Teruhashi.
She also puts every point into charm when creating her character in a VR game.
Then Qian Xue discovers that the art style of her game is completely different from everyone else's.
The Demon King's castle.
Demon King: "You are the glorious Four Heavenly Kings of the demon race, and yet you've betrayed me over some human girl?!"
"Can't help it, boss. She's just too cute!"
"Damn you useless traitors!"
The Demon King raises his greatsword and glares furiously at the girl before him.
"Oh, wow! I'm quitting as Demon King as of today, too~"
[PS: A proper heroine-centric story, no gender transformation, lighthearted and sweet.]