After meeting Harry, Sirius did not return to his old mansion at 12 Grimmauld Place, as promised, but remained at Hogwarts, living in Hagrid's hut.

"Don't worry, my house-elves will take care of the house." Sirius, wearing sunglasses, shook his long curled hair, and said in a dashing manner.

In fact, Calvin didn't care if Sirius stayed at Hogwarts, he had been trying to persuade Blake to give up accepting Dumbledore's invitation, and almost had another fight with Dumbledore for this.

It was Professor McGonagall who really had an opinion about Sirius, as Sirius always appeared in the Gryffindor common room, and Professor McGonagall couldn't catch him at all.

Calvin was also surprised by this, as he had not discovered Sirius's way into the Gryffindor common room.

"It's a secret, Hiccup," Sirius said with a burp as Sirius took a full glass of flame whiskey at the Hog's Head Bar, "and only Harry and I know the secret."

In addition to free access to the lounge, Blake, the king of Gryffindor children, led the Wesley twins' mischief career to new heights, and at the same time, the gems in the Gryffindor hourglass also hit an unprecedented low.

"He's much more destructive than the Wesley brothers," Professor McGonagall complained in the professor's lounge, "and George and Fred even had the urge to learn from him."

"yes, yes," Calvin said as soon as he found his chance, "Professor McGonagall, Vice Principal McGonagall, how can Sirius be a teacher with such a temperament?" You'll have to convince Headmaster Dumbledore."

"I persuaded!" Professor McGonagall's nose twitched, and her mouth pursed into a line, "But Dumbledore said that as long as Blake picked up the book, he would become a qualified professor."

It seems that Dumbledore is determined to make Blake a professor of Defence Against the Dark Arts, but what is his purpose in doing so?

Of course, in addition to Professor McGonagall, there was one other person who was also unhappy with Sirius, and that was Professor Snape.

On the morning of Sirius' release from prison, Snape found Calvin and said in a gloomy voice, "Capet, what did you do? You took a murderer out of Azkaban."

Calvin slipped a steak and stuffed it into his mouth, "Snape, didn't you read the newspaper?" I recommend you take a look, the article "Ten Years of Unjust Imprisonment, Heroes Are Finally Zhaoxue" is quite well written, and if it is arranged into a drama, it can be sold directly."

"Of course I did, Calvin," Snape said gloomily, "but can flowery rhetoric cover up the truth? I found a couple of loopholes just by looking at that article."

"So what, the Wizengamot has been voted unanimously, Sirius is not guilty, including Headmaster Dumbledore." Calvin said nonchalantly as he spread the butter on the bread.

"It's not the truth at all, it's politics." Snape whispered in Calvin's ear, "Stay away from the castle for that murderer, I can smell him here." Unless Peter comes back to life and tells the truth, he will always be Lily's killer in his eyes."

For the next few days, Sirius and Snape were uneventful, and there was no conflict between the two without meeting directly.

It wasn't until about a week later, when Calvin was dissecting the corpse of an invisible beast in his office, that Snape stormed Calvin's office.

"What's the matter, Snape," Calvin frowned, putting away the specimens and dissecting equipment, "what's the matter?"

"What about the murderer?" Snape said angrily, "Where is he?"

"Sirius," Calvin shrugged, "he should be in Hagrid's cabin." I don't think you need to go to him, it's good for you two to keep this distance."

Snape sneered, "Hmph, distance, does Blake really understand what that word means?" I'm telling you, my private warehouse has been stolen and two very precious potion materials have been lost, African Tree Snakeskin Fragments and Twohorn Powder."

"Ah, it's very precious," Calvin said, "

So, you suspect Sirius stole it?"

"Who knows if he learned a thing or two from other prisoners in Azkaban." Snape glanced around Calvin's office, "You'd better tell Blake to be careful, maybe I'll add some spice to the wine he drank at the Hog's Head Bar that night."

Snape left Calvin's office like a bat.

Calvin didn't take this to heart at first, and Sirius's temperament was definitely not as simple as stealing anything to trick Snape.

But it didn't take long for Calvin to find out that someone had lost something again.

On Friday night, Calvin gave lessons to the Cedric and Wesley twins. Cedric has always been the character of the Sunshine Boys, but the Wesley twins are depressed and absent-minded.

It's really a family, and even the sad performance is almost the same.

It wasn't until one time when George tried to reach for the hot cauldron with his hands that Calvin finally stopped them.

"Alright, gentlemen," Calvin controlled the world in the painting to remove the alchemy table and replace it with three chairs, "what are you doing today?"

George and Fred said in unison, "It's nothing, Professor."

"Well," Calvin rubbed his eyebrows, "gentlemen, you are learning alchemy, this is a very dangerous magic, if you can't adjust in time, then today's lesson is over here."

Fred hurriedly said, "Well, Professor, it's really nothing, it's just that we lost something."

"A map." George added.

"A map?" Calvin repeated, suspiciously, did the Wesley family treat their belongings so affectionately?

Ron is understandably in a bad mood when he loses his pet, and the two of them will be so depressed if they lose a map?

"yes, Professor," Fred nodded, "it's not a big deal, I think I can get on with the class."

"Okay, I hope you can be more serious about it."

"By the way, Professor Capet," George asked suddenly, "if you were asked to make a map that would show the location of all the people at Hogwarts, would you be able to do that?"

"Well," Calvin thought for a moment, "it's not too hard for me, but it's a big test for you. Even if you study with me, you won't be able to make it until at least fifth grade."

Just when Calvin thought it was over, another theft occurred in the castle, causing Calvin to wonder if there was a conspiracy behind it.

About a week later, Bascida burst into Calvin's office and said in a panic, "The mirror, that mirror is missing."