After I Died, I Became the Mirror Demon's Maid

After office worker Jin Jing is deliberately run over and killed, her soul is sucked into the mirror world by Daiwo, the Mirror Demon. To find the culprit and return to the human world, Jin Jing has no choice but to accept a demon's contract. Her soul transforms into a demon, and she becomes Daiwo's maid, Jingjing.

After a year of training:

"Pour me a cup of coffee, maid."

"Yes, Master."

"Come sit beside me. I'll teach you to play the piano."

"Yes, Master."

"I'll teach you what it means to fall in love. You were single before you died, right?"

"Yes, Master."

"Maid, I order you to marry me."

"No."