You got a job, your boss is decent and the amount they pay you also is. The job is about selling potions, and...Casting curses on people

Mostly they come for potions, but one day, a girl wearing a black hoodie, came and said:

"I want to curse someone...I want to curse the princess."

You were shocked, the princess? Who would want to do that? You still agreed.

You sneaked into the castle, and saw the princess talking with a prince, it was the perfect time to curse her, as you sneaked closer, you casted the spell to curse her.

The curse would take 1 day to fully be done, you ran out of the castle and got back to job

Next day.