Hogwarts: I rely on MC to pretend to be an alchemy professor

"You're back now, and believe me, I haven't made even one mistake in all these times." Kaisen showed respect to his elders for once, and honestly invited Dumbledore to sit on the sofa, then continued to study the silver skull in the corner that was shining with purple light.

"Is this your alchemical work?" Dumbledore asked.

"It's almost like that. This is an integrated version of the magic stance amplification skeleton I made. Of course, it also has some physical attack tools built in." Kaisen said as he continued to use various fine small blocks to do some odds and ends on the skeleton's spine.

"Is this an exoskeleton?" Dumbledore asked.

Kaisen shook his head: "That thing has to be put on and taken off, how troublesome."

"Is it a simple puppet? Like an iron golem?"

Kaisen still shook his head.

"What is this?"

"Endoskeleton."

"???" Dumbledore stood up: "Is it the endoskeleton I thought it was?"

"That's about right. Do you know what the world looks like to a person with OCD? If a small black dot appears in a pure white space, it will make the person with OCD feel very uncomfortable. But if it is a space that is extremely chaotic, there will be no such feeling. It's like a mantis knife. Instead of having two more plug-ins on a whole human skeleton, it is better to replace the entire skeleton." Kaisen explained.

"I don't quite agree with your approach." Dumbledore shook his head.

"Emmm...I feel the same way, but if I ask you to help me, will you refuse?" Kaisen said as he took off his coat.

"What else can I do?" Dumbledore sighed and took out his wand.

"Thank you. Actually you don't need to use the wand. Just send me to St. Mungo's when the time is right." Laisong said as he took out the diamond sword and was about to use it on himself.

"Let me do it." Dumbledore stopped Kaisen's actions. He just pointed his wand, and the lines drawn on the latter's body with a marker were cut open accurately by magic.

"Oh, thank you so much." Kaisen said as he turned his back and rubbed the cut made by magic onto the alchemical skeleton with a hissing sound.

Huahuahuahuahuahua....click!

"........and then what?" Dumbledore, who witnessed everything but understood nothing, asked in confusion.

"What do you mean by "then"? It's done." Kaisen took out a bottle of healing potion given by Snape from the table beside him, put ice cubes in it, shook it, and then drank it all in one gulp.

"Do you know what you looked like?" said Dumbledore.

"What are you thinking about?"

"It's like a person forcibly stuffing a second skeleton into his own body."

Kaisen shrugged. "At least now that I have this skeleton, I don't have to use those tiny cubes to help me cosplay the levitation spell."

"I want you to promise me, Kaisen, that if you continue to perform this kind of dangerous human alchemy in the future, you must tell me, or Severus." Dumbledore advised earnestly, just like many parents facing their adolescent children who have begun to have their own will.

And Kaisen still looked the same: "Yeah, yeah, okay, no problem, I won't do it next time."

Dumbledore also knew that Kaisen had not remembered what he had just said. He just sat on the sofa helplessly: "Lucius Malfoy wrote me a letter. A man who calls himself Vickers gathered some wizards in the name of Tom and planned to make a big fuss at this year's Quidditch World Cup."

Kaisen put his clothes back on: "But what good will this do them?"

Dumbledore shook his head. "On the surface, it doesn't seem to be any good. Maybe it's just a prank, but I don't believe it. I'm more inclined to think that Tom is trying to fish in troubled waters. What is there for him to see in the Quidditch World Cup?"

"Harry?" Kaysen asked.

"Maybe. Lure the tiger away from the mountain? It's best if none of you leave Harry one day."

Kaisen put an old ice cube into the cup: "That's difficult. You can't let me witness innocent people in danger and remain indifferent."

Dumbledore naturally placed the cup in front of him and poured some wine into it: "You can take him with you, just as if it were to let him get in touch with the darkness of the wizarding world in advance."

Kaisen brought the glass to himself again and took a sip, "Don't tell me the Ministry is planning on pretending to be dead."

"Oh, I have to be responsible for our ally Mr. Lucius. The more people who know about him, the more dangerous it will be. I only told you this news." Dumbledore explained.

"I didn't know you were so particular," Kaisen complained.

"I have always been this kind of person...Do you have confidence?"

Kaisen nodded: ".............If yes."

"........................Aren't you going to show me your skills?"

"Uh..." Kaisen stretched out his arm, and with a click, a mantis knife came out from his sleeve: "I used Ender Cutter before, but that thing is not very useful against magical animals with high magic resistance or powerful wizards, so I specially upgraded this."

Dumbledore looked at him in confusion, but he quickly reacted and cooperated by taking out a glass wine glass from the coffee table and putting a layer of All-Protection on it.

"I thought you would use yourself as a target for me." Kaisen curled his lips and put away the mantis knife, curling his lips.

"Although I am old, I am not that stupid." Dumbledore explained, picked up the wine glass that was cast with the universal protection and threw it towards a random place.

The next moment, a delicate piston mechanical arm suddenly appeared behind Kaisen, with a sharp blade on it that instantly pierced through the wine glass that was blessed with all the protections.

"...................Originally, that universal protection could remain unmoved even under the burning of the Fiendfyre...................And where did you get this thing?" Dumbledore asked, looking at the mechanical arm behind Kaisen.

"It's always been in my built-in skeleton." Dumbledore walked around behind Kaisen and took a look. Sure enough... there was a big hole in his clothes.

"Huh, this thing does look cool, but it just requires too much alchemy... You should only have one, right?"

"Actually not. I have nine more powerful yet simple robotic arms like this!"

“..................”