Lu Mingfei: the Dark Lord Returns from Hogwarts

My name is Lu Mingfei, I am 18 years old and I am the Dark Lord. ——— "The opponent is Lu Mingfei, are you sure?" "Is he the Dark Lord who masters ancient magic and the Unforgivable Curse and kills people when he's happy?" "That's right." "We can fight." "Can you win?" The god on the horse chuckled. "Don't worry, you'll die."