I Entered the Body of a Beautiful Young Master

Master = witch.

As a witch, everyone wants her dead. As his master, she abandoned this unprofitable disciple, too.

That woman died ages ago in some godforsaken corner of the world.

When her wretched disciple learned of her death, he said, "Serves her right."

(Pure romance, happy ending. Here's hoping this story gets ten thousand followers someday. I'm paying out of pocket to hire an illustrator whose art style I like.)