It's Normal for a Freshman at Hogwarts to Know the Killing Curse, Right?

[Snake Court + Plot Destruction + Thorough Darkness + Pure Blood + Dark Lord + Profit First] (The rating has just been released and will increase slowly. If you are interested, please take a look first. Thank you!) (There is no female protagonist, all female characters are defined as followers, fanatical admirers, and all the protagonist's actions are for the greater good!) Cammit traveled to the magical world of Hogwarts and became the only son of the sixth generation of the Black family, the oldest, richest and noblest family. Kamite, who had no golden finger, was quite disappointed with his start. But maybe it’s because he has been a human for two lifetimes, but Kamiit discovered that his memory and learning ability are really terrifyingly strong! The Black family has a large number of magic books and various spells. Kamiit learned various spells very quickly. Kamiit looked at the black killing curse he had casually cast and fell into deep thought. So, can the Soul-Calling Curse really absorb the soul ring and change its color? ...... Snape: The Black family is really the most annoying, but as for Kermit, it's okay! Dumbledore: There are many students who give me headaches, but the only one I have no way to deal with is Kmit! Older cat girl: Kami is the best student and my pride. I am proud to have taught Kami. Noseless Monster: Compared to Kamiit, I seem like a rookie. I told him that I killed hundreds of people, and he actually said it was not bad and asked me how many I killed yesterday! All for the greater good!!!