Harry Potter: the Villainous Professor

Traveling through the world of Harry Potter, Link spent his study career smoothly and traveled around the world. In 1992, McGonagall and Dumbledore came to ask Link to be a professor at Hogwarts. His main course was Defense Against the Dark Arts. The innocent and cute trio of first-year students whose deducted points changed their style under Link's teaching. He already scolded you, Ron, what nonsense are you talking about! Beat him! You can't use your fists if you can't use your wand? Tell me, Harry, how do you catch the Quaffle 100% of the time? Right! Get rid of the opposite Seeker first. My dear little Hermione, have you been a wizard for so long that you have forgotten that you have seen a gun? Bring two and shoot him!