The Great Mage of the Demon Slayer Squad

"Hey! William! What are you doing in the bar again, you poor boy! Why don't you go to Azkaban to see your bastard father?" "What a poor man, I'm rich today!" William Einstein took out a gold Galleons from the pocket of his white coat, which was so dark that the former color could not be seen, and slapped it hard on the bar. "Old Jack, cancel the old debt for me and give me a glass of whiskey!" Now that William is rich, he naturally starts to smoke. In the past, he could not afford whiskey. The black boss with a dark face turned a colorful brochure upside down on the table. The strong smell of hair oil emanated from his black curly hair, which was unpleasant, but William, who had been eating and drinking here for many years, was already used to it. [The above is the first paragraph at the beginning of the book. If you are interested, you can take a look. If you are not interested, forget it] William lost his mother when he was young. His father was imprisoned for researching Muggle objects, and all the family's property was confiscated. Therefore, he began to wander around France when he was 10 years old. He used to be a book painter on the earth. He discovered something while drinking in a pub one day, and now he has returned to his old career. Now he is 12 years old, and the plot of Hogwarts will begin soon.