Edgar Cloteau had a precognitive dream in which he saw the future of Hogwarts seven years after he resigned.
Tearing up his resignation letter and holding the script in his hand, he decided to save everyone.
...
"Mr. Potter, although I am not a qualified Potions professor, it would be a bit excessive to drop a love potion into my afternoon tea, right?"
The original male protagonist is a colleague of Snape, a former explosion enthusiast of the Order of the Phoenix, and a handsome dark wizard who was recruited.
Male protagonist's perspective: the life of a social animal plotting revenge
Harry's POV: Happy school adventures... And the ubiquitous Potions teacher?
Fast update, welcome to favorite~love~
Purpose: to make up for regrets