The Pacifist Necromancer of Hogwarts

Henry Anthony, an ordinary supermarket cashier.
Until one day, a strangely dressed man came to his door and asked why he didn't reply to the letter from the Office for the Prohibition of Abuse of Magic.
Anthony: What did I abuse? magic? Impossible, I'm just a supermarket clerk doing my job.
Anthony: Wait, you're not talking about my pet, are you? Or are you talking about me crawling out of the coffin?
Dumbledore: Perhaps, Mr. Anthony, you would like to take up a position at Hogwarts?
So Hogwarts welcomed their new professor of Muggle Studies.
For the sake of his own quiet life, Anthony ushered in his own new topic: how to prevent an unknown person's resurrection plan.