The most dependable (sarcastic) assassin — Gao Xuan. Developing himself with an inventory of powerful gear. A master of biding his time, backstabbing, and brutalizing weaklings. Don’t love me. Nothing would come out of this. I am an assassin without feelings.

- Description from NovelUpdates

Youngville: Mr. Devil, this goddess is worth studying.

Greedy Devil: Flat body, not interested, one of the low-grade magic stones you owed last month has expired. As agreed, 13 returnees will be returned. Please repay one middle-grade magic stone and three low-grade magic stones.

Youngville: Wait, Mr. Devil, wasn’t the magic stone used to buy the wizard book dedicated to you last time? Why do I owe it?

Greedy Devil: Boy, the wizard’s handbook dedicated to me has been used to pay off the debt three months ago, and that magic stone can only be considered as borrowed by you.

So, the boy Well, who had increased debts, became depressed again.