Dumbledore? He knows nothing about MC alchemy.

Click, click, click...hiccup...

There were densely packed wine bottles scattered around the two of them, and Snape surrendered early. He could not eat any more when he was eating the fifth piece.

I can responsibly say that the rest was all eaten by Kaisen.

"I admit it, you really have a huge stomach." Snape's pupils couldn't stop shaking after he witnessed Kaisen eating four large bags of meat.

"It's okay, it's okay." Kaisen burped casually, reached out and knocked on the lava block in front of him, breaking it into pieces, which eventually dissipated on the ground.

"Go to the second floor and find a room to sleep in." Snape said as he slowly stood up and walked towards the two-story building not far away.

"Uh-huh... coming." Kaisen stood up unsteadily and walked towards the small building.

...............................................

the next day........................

Kaisen woke up slowly from his bed, and after opening the door, he saw a golden text slowly floating in the air in front of him.

The general meaning is that Snape has returned to Spinner's End. As for this small courtyard, the key and the core of the protective spell are on the table on the first floor. You can continue to live here, and if you want to leave, just put them back.

"Ah... should I stay here or not?" Kaisen muttered to himself, then left the small courtyard and teleported back to the Blake house.

"Kids, did you miss me while I was away all night?" Kaisen appeared in the living room of the Blake mansion and said loudly.

".................No one cares." Ron, who was playing wizard chess with Neville, said.

Kaisen touched his nose awkwardly and walked towards the long table not far away to see if there were any leftovers from the morning. Then he realized what was going on.

Now that this place is not the only one living here like before, leftovers are generally not left on the table.

He's going to look for it in the kitchen.

Then he found a dozen fried eggs and bacon, and ate them all by himself with his own milk.

"It's comfortable." Kaisen said happily while sitting on the sofa.

"You're back. What did Severus say?" Dumbledore walked over and sat next to Kaisen and asked.

"He agreed, and he was in a particularly good mood because of his new position. He even treated me to a meal." Kaisen said happily, like Patrick Star who was about to celebrate his 30th birthday.

"That's good... Now that all the work is done, I can finally take a break." Dumbledore breathed a sigh of relief.

Kaisen raised his eyebrows, turned his head to look at Dumbledore, and then watched him find the Horcrux in the past week, add a security guard to Hogwarts, modify the personnel transfers of two faculty members, and stay up all night to find Sgraughorn...

Well....................he has indeed done a lot of work. Just take care of yourself and don't discourage him.

Today I am also a gentle little angel...

..........

Chapter 412 Diagon Alley

In a blink of an eye, the holiday is half over...

The Hogwarts report card and various things needed for the new semester were also sent by owl by Professor McGonagall, who returned to Hogwarts to work overtime during the holidays.

As for the two wizarding families, I tacitly assigned the task of taking the little wizards to Diagon Alley to buy things to three boys and one girl: Kayson, Sirius, Lupin, and Tonks who had taken a leave.

After all, youth is a brick and can be moved wherever it is needed.

Therefore, the next day, instead of using the fireplace, everyone used Kaisen's Ender teleport to go directly to Diagon Alley.

Since Hermione was currently abroad with her parents, the task of buying her supplies for the new semester naturally fell on Ron.

Mr. and Mrs. Weasley tacitly took each other's gold Galleons and handed them to Ron, asking him to remember to buy a small gift for Hermione.

In this way, Kaisen, Sirius, Lupin and Tonks, three men and one woman, and Harry, Ron, Neville and Ginny, three men and one woman, each watching one, got along very harmoniously.

The new semester is not like the first few years when Kaisen came to Hogwarts, when the professors were all abstract and useless. Therefore, the school supplies for the new semester are no different from the previous ones. You just need to update the textbooks.

As for Ginny...she doesn't even need to update her teaching materials.

She wisely chose not to buy new textbooks, but instead directly asked to use Hermione's old textbooks.

Hermione: "I can hear her calculations from France."

But there was no way around it, as the two of them would be a family in the future, and it was a piece of cake for Hermione. They had even agreed on it before the holiday at Hogwarts.

So Ginny doesn't need to go to the dungeon for this trip to Flourish and Blotts.

She came to Diagon Alley today just for fun.

But the other three were not so lucky. Kaisen quickly packed a set of new semester textbooks for each of them and handed them to the three little wizards. He refused the gold galleons that the three little wizards took out at the same time and walked towards the cashier on his own.

The young wizards were quite conspicuous and had anticipated this. After all, if they had to pay for their own expenses when going out with the alchemy professor, wouldn't that be a slap in Professor Kaisen's face?

So the three little wizards also put the gold Galleons into their pockets. Then, Harry, who couldn't bear the uneasiness in his heart, directly opened the packaging of the new book, found the Defense Against the Dark Arts textbook, and began to roughly flip through it according to the table of contents.

"Harry...did you take the wrong medicine?" Ron looked at Harry's actions, a little confused.

"I advise you to take a good look at it. The professor of the Defense Against the Dark Arts class in the new semester is Snape. I can imagine how it would feel if we made even the slightest mistake," Harry reminded.

Sirius came over after hearing what the young wizards said. Of course, he didn't disturb Harry and the others, but stood next to Kaisen: "Snape has become the professor of Defense Against the Dark Arts. Does that mean he is working two jobs now, or has he found a new Potions professor for Hogwarts?"

"The new Potions professor is called...Sglahorn. You should all know him. He should have taught you." Kaisen said.

Sirius's mouth twitched at the name, "Yeah, I do recognize that name. He was quite conflicted towards me back then."

"Contradiction? What's going on?" Kaisen asked in surprise.

"On the one hand, my family background... Being the eldest son of the Black family is quite attractive to him. On the other hand, my poor performance in Potions means he can't accept me into the Slug Club. Of course, if he invites me, I may not agree to join, because Snape is there too, and he is the head of Slytherin after all. I take this very seriously." Sirius explained.

"So how bad were your Potions grades back then?" Kaisen said speechlessly with his half-moon eyes wide open.

"It wasn't particularly bad, actually. Getting a good grade and occasionally an excellent grade was easy. But Snape's Potions talent was so high at the time that he was incredibly strong in the entire Hogwarts Potions department."

"So in order to avoid being looked down upon by him when I was bragging about Potions, I chose to perform poorly in the Potions exam. This way I could prove that I'm not inferior to him in Potions, but I'm just too lazy to study such boring courses. You should all understand the boring little thoughts of young people at that time." Sirius scratched his head embarrassedly.

Kaisen nodded: "I understand, what is your current level of potions?"

Sirius raised an eyebrow. "I only slack off during exams, not when studying."

"You kid." Kaisen smiled and stretched out a finger, constantly pointing at Sirius.

Soon, the three little wizards on the ground roughly flipped through the new Defense Against the Dark Arts textbook and found that they could use most of the magic in it, and the advanced techniques were not too difficult.

Harry breathed a sigh of relief: "That's great, we shouldn't have too much trouble in the new semester."

Neville also nodded: "I hope so."

After finishing reading the textbooks, they put the books back into the bag, tied the hemp rope on it again, picked it up and left.

But Harry's bag of books seemed a little light for some reason.

The few people who left Flourish and Blotts found Ginny and Tonks eating ice cream on the roadside. After the eight of them gathered together, they chose to head directly to the joke shop run by the Weasley twins.

After entering, Kaisen found a place where he would not obstruct others and took a rough look. Almost every inch of the wall in the room was filled with all kinds of interesting little things. The floating rune matrix in the center was originally surrounded by a layer of glass panels, but now there is also a layer of circular shelves, which surrounded the rune matrix and left only a pointed head.

As for other places, they are quite standard. Basically, they still look the same as other stores.

This can be considered as a wild imagination in decoration, but once it interacts with reality, the wild imagination will be dragged to the ground by the gravity of reality and severely tortured.

What a miserable word.

But having said that, Kaisen doesn't have the same emotional investment in his work.

He likes decoration because he likes the creative process. If he gets angry because his work is not treated well, such behavior should not appear in this world.

It should appear in Detective Conan next door. The perverts over there are so abnormal that even Voldemort can't understand them.

Asking for gifts, family members!

Chapter 413 School starts.

When the Weasley twins saw Kaisen and the others coming, they excitedly walked through the crowd and came over.

"Hello, it's almost time to buy new textbooks." said the Weasley twins.

"Yes... because your business has been so busy these days, mom asked us to come over to see if you have cleaned yourself up." Ginny said with her arms around her shoulders like a parent.

"Oh... now you see clearly, it's obviously no different from when we were at home."

Unlike Ginny, the other three were already quickly moving through the maze of the joke shop. Everything seemed interesting to them.

The bag that was originally used to hold books was opened again, and the little space on it was filled with mischievous items.

Kaisen was already waiting at the cashier counter, waiting for the little wizards to bring their things and then pay for it themselves.

However, the Weasley twins suddenly put on a flattering smile and said, "Professor, since you brought them here, you don't have to pay for it. Just consider it a token of our appreciation."

Ron, who was picking up something, nodded in agreement after hearing this, then took out his wand and cast a Retraction Charm on the paper bag containing his books.

On the other side, Kaisen, who was standing by the cashier counter, scratched the back of his head. He admitted that this was the Weasley twins' kindness, but these little wizards took too much, so he had to give them some.

Suddenly, a small white cube skull appeared behind Kaisen. One of the skull's eye sockets was transformed into an alchemical mechanical eye. After it flew out, it began to use the alchemical mechanical eye to scan the various things held by the four people, and then transmitted the data into the skull's brain and began to calculate.

Finally, he took out sixty-two Galleons, twelve Silvers, and six Copper Knuts.

"I'm such a genius!" Kaisen boasted to himself as he felt the data transmitted from the servo skull behind him.

His servo skull is different from Cedric's. The skull behind Cedric is equipped with a beacon, which gives him a gain effect, while his own servo skull is equipped with an alchemical computer, which can provide him with huge computing power.

Of course, it is still an initial version, and it is impossible to predict what the enemy will do next. It can only help calculate the bill when buying things.

"We still have to keep upgrading." Kaisen said as he led everyone out of the joke shop, and then teleported everyone back to the Black mansion in public.

.........................................

Next is a part that happens every holiday.

"It's already the last day of the holiday. If I listen to the clock going in the opposite direction a hundred times, can I go back to the first day of school?" Ron said as he packed his luggage.

"Obviously not." Hermione had flown back from France a week ago, and was then taken directly to the Black mansion by Kaisen to spend the last week of the holiday.

As for Dumbledore and Grindelwald, they had already returned to Hogwarts in advance. They needed to check Hogwarts from inside to outside to make sure that there was nothing that shouldn't be there inside Hogwarts.

Kaisen also dressed early, as he had to go and pick up a ancestor.

"I'm really impressed. Can't he just bring his own fireplace or portkey to Hogwarts?" Kaisen muttered as he knocked on the door.

Then, in less than a second, Sgraughorn opened the door. "The situation is turbulent right now, and using the Floo Network is prone to being intercepted by Death Eaters. As for the Portkey, I don't have the awareness of knowingly breaking the law."