Dumbledore? He knows nothing about MC alchemy.

"Oh, what I meant to say is that just today, we had a real wizard duel application scheduled for noon."

"Let me see, Dean Thomas requests a one-on-one wizard duel with Harry Potter, for reasons...love." Dumbledore smiled and handed the application form to Kaisen: "Look, these young men are full of energy and love and hate."

Kaisen nodded, took the application, and looked at the challenger's signature. Dean Thomas's name was printed there, while the challenged's was blank. "But the challenged should also agree to sign this."

Dumbledore nodded and said, "Of course. I will give this application to Professor McGonagall later, and then Professor McGonagall will give it to Harry and let him decide whether to accept the application."

"Do you think Harry would accept that?"

Kaisen raised an eyebrow as he sat in his chair. "Harry isn't aggressive. He only becomes aggressive when someone close to him is in danger or when he deeply resents someone... But since it's about love, Harry should agree. He's a little boy after all."

"Then this task is left to you. You will be the referee on the duel stage. I have a few requirements for this duel." Dumbledore poured a glass of wine for Kaisen and said.

"I didn't say I agreed to this job." Kaisen said after drinking the wine.

Dumbledore said nothing, took out a bottle of wine from the wine cabinet and placed it on the table: "Now?"

Kaisen raised an eyebrow: "Now I agree!"

Dumbledore nodded. "I have a few requirements for this duel. Both of you can get injured. You have milk there anyway, which can heal any residual dark magic. But there must be no humiliation."

"In other words, they can chop each other into small pieces, but they can't slap each other in the face. Do you understand?"

Kaisen nodded. "I understand. They can beat each other's brains out, but not their tears. After all, a teenager's pride can easily explode into concrete with the acceleration of gravity."

"That's no problem. As for the rest, I have great confidence in you in terms of fairness. Help me make this duel beautiful, and prepare victory prizes and commemorative prizes. How about that?" Dumbledore stood up and appeared behind Kaisen, patted him on the shoulder and said.

"Uh-huh, sure." Kaisen raised his eyebrows and was about to stand up.

"I have finished my business." Dumbledore shrugged and returned to his seat. When Kaisen heard this, he also wanted to take the bottle of wine, but when he got to it, he found it was empty.

Dumbledore replaced the bottle of wine in the wine cabinet.

".......Huh?" Now only this shocking question can reflect Kaisen's true heart.

"I didn't say I was going to give this bottle of wine to you?" Dumbledore spread his hands and said happily.

"Not you M............"

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

The three people sitting on the sofa in the alchemy office watched with their own eyes as a huge sponge suddenly appeared next to the coffee table, and bottle after bottle of wine appeared from the void and fell on the sponge.

"What's going on?" Thomas looked at Orlante who was sitting next to him with a confused look on his face.

Orlant had never seen this scene before, and looked at Clay who was sitting opposite him.

The latter raised an eyebrow and said, "I wonder where the professor robbed the wine from."

Just as he finished speaking, Kaisen teleported back. Not only was his hair a mess, his clothes were a mess too. He looked like he had just jumped out of a washing machine, messy and sharp.

"Professor, what's wrong with you?" Clay and Orlant both stood up. Thomas was a little slower to react, but he also stood up and asked with concern.

"It's okay, it's okay. It's just a fight with Dumbledore. It's no big deal." Kaisen waved his hand, picked up all the wine on the sponge and put it in the wine cabinet.

Then he tidied himself up briefly, sat on the sofa and smiled at Thomas: "I was just in Dumbledore's office and heard him talking about you, the duel application."

Thomas was a little embarrassed, obviously feeling that his relationship with Kaisen was definitely not as good as Harry's and Kaisen's, so he didn't want to say much.

Seeing Thomas like this, Kaisen took the initiative to reassure him, saying, "Dumbledore also told me the reason. It's normal for you to be jealous at your age. I support this. You have a temper."

Thomas still felt awkward sitting on the sofa, but he still didn't know what to say to Kaisen. Finally, he said, "Um, Professor, when can Orlant leave?"

"After I finish my homework," Clay said without looking up.

"Why are you looking for Orlante?" Kaisen asked.

"Harry's dueling skills are not low, so I came to learn from my junior. After all, the powerful and lethal magic developed by Orlante is famous throughout Hogwarts." Thomas said a little embarrassedly.

"Orlant, you've made it big. People are looking for you to learn from you!" Clay said nothing and responded with a set of Belia's quotations.

"Yes, I have some talent in this area." Orlant said with his head still lowered.

"Professor, you won't tell Harry about this, will you?" Thomas asked awkwardly.

"Why should I say it?" Kaisen asked subconsciously.

"Because if I ask Orlante for tutoring, it will definitely destroy fairness, right?" Thomas answered without thinking.

"In a duel, one is strong and the other is weak, and one defeats the other. This is a normal duel. Don't worry." Kaisen waved his hand to signal Thomas to rest assured.

"Okay! I'm finally done!" After finally completing two kilograms of homework, Oulant let out an "Oyeah" and shouted happily.

【Request for gifts】

【Submission area】

It can be seen that Xia Fan really likes Narcissus [some people in the group said that my straight man's sudden inspiration is better than the rotten girl's brainstorming] So what is the point of Narcissus, just curious

I was quite impressed by the second creation of 3R boss, the pure color and pure 2D style, so even though Xia Fan is already on the list, but... he is still on the list!

Chapter 479 Harry: Obviously... I was here first!

"You can leave after you finish writing. You still have to give a lecture to Thomas." Kaisen said and waved his hand to signal the two of them to retreat.

Then he sat on the chair and looked at Clay who was still in the office.

What was he going to do when he called Clay to his office?

"Professor...is there anything else I can do for you?" Clay asked.

"It should have been there, but it's gone now. Go back." Kaisen waved his hand and let Clay leave.

I tidied up the wine cabinet and saw that it was almost time... In short, it was time for dinner.

As soon as Kaisen sat down in the hall, Dumbledore raised his eyebrows at him: "You're not too late. You can still watch the duel contract between Harry and Thomas here."

"Does this thing require a contract?" Kaisen said with some confusion.

"Of course, after all, blood will be shed, and a contract is absolutely necessary. So the notary public is you." Dumbledore raised his eyebrows. "After all, you are their referee."

Kaisen frowned and whispered, "You know, I don't know ordinary magic."

"The Unbreakable Vow is a kind of mysticism based on rules. Strictly speaking, it is not magic. Just go ahead and do it with confidence," Dumbledore explained.

"Uh-huh... okay." Kaisen shrugged and slowly stood up.

Dumbledore also walked down the stage and brought Harry and Thomas to the podium, on either side of Kaisen.

"We need to use the Unbreakable Oath to control the rules before you duel. If one of you thinks that this duel is unnecessary, or that the sole contract is unnecessary, you can leave on your own." Dumbledore said loudly.

Neither Harry nor Thomas had any objections.

Dumbledore gave Kaysen a look, who said, "Please hold each other's forearms."

Harry and Thomas did as they were told. Seeing this, Kaisen drew his wand and said, "As your notary and referee of the duel, I will write your oath this time. Do you have any objection?"

Harry and Thomas said in unison, "No."

A series of experience balls flashing with blue-green light instantly spurted out from the tip of Kaisen's wand, slowly wrapping around the arms of the two men.

Kaisen looked at Thomas and said, "Dean Thomas, do you willingly invite Harry James Potter to a magical duel this Friday in the center of the Great Hall and swear this unbreakable vow to bind both parties?"

Thomas nodded, and Kaisen looked at Harry again, swapping their names and repeating the words he had just said.

The moment both parties agreed, another series of experience balls flowed out from the tip of the staff and wrapped around the arms of the two.

"As the referee, I will make the following rules for the duel. First, no one is allowed to be absent from the duel for any reason. Second, it must be a fair duel. Both parties may only use their own magic, spells, and wands. No other alchemical tools, magical beasts, pre-set traps, or help from anyone are allowed."

"Third, the duel will last three rounds. After all three rounds, the duel must end. Fourth, the duel will be deemed over if one party is effectively disarmed and loses their wand for more than three seconds; one party is effectively knocked down and unable to resist for more than ten seconds; or one party voluntarily concedes defeat by clearly and loudly saying the words 'I surrender'."

"Fifth Personality: Dignity requires a mutual commitment from both parties. No subjective or objective insults are allowed during the duel to ensure the integrity and dignity of both parties."

As ball after ball of experience bound the two men's arms tightly, they eventually merged into their flesh and blood.

Finally, Kaisen's wand fell, and the unbreakable oath was officially completed.

"How is it? Not that difficult, right?" Dumbledore raised his eyebrows and looked at Kaisen who sat back in his seat.

"Not bad, I have a talent for being a referee." Kaisen said happily, obviously very satisfied with the rules he had just mentioned.

"Very good, very good indeed." Dumbledore nodded. "It would be even better if I could have my wine returned to me."

"Let's put one thing in perspective." Kaisen turned his head away.

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

Not long after returning to the office, Orlant and Thomas came over.

If it were before, they could just find a classroom at random, with blackboards, desks, and sacks of chalk. But now the curfew rules at Hogwarts are getting stricter and stricter. Grindelwald may appear in any corner of Hogwarts at any time every night, which is very dangerous.

So the two of them were finally desperate, and suddenly a light bulb went on in Orlant's head, "I have an idea," and he took Thomas to Kaisen's office.

The latter generously left a light on for them in the office during the long night, lent them a blackboard and chalk, and went upstairs to sleep.

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

"........................Look, it's already this late, and Professor Kaysen hasn't forgotten to leave the light on for us. The professor still loves us!" Harry and Ron, wearing invisibility cloaks, slowly moved towards the alchemy office. Harry said to Ron excitedly.

"Oh, why don't you take a closer look?" Ron sighed helplessly and pointed to Orlante who was giving a lecture to Thomas in the distance.

"...................so?" Harry was a little confused for a moment: "What happened?"

Ron pursed his lips: "This means...emmmmm.......................Perhaps the reason why the light is on in Professor Kaysen's office has nothing to do with you. It's just to give two lost little wizards light to learn magic." Ron touched his chin and said very objectively.

"It was obviously me who came here first..." Harry said with tears in his eyes.

"Come on, Harry, judging by the way they look, they must have arrived more than an hour earlier than us." Ron patted Harry's shoulder helplessly and said soothingly.

Chapter 480 The Second Sun of Hogwarts

In the end, Harry and Ron had no choice but to not go upstairs to disturb Kaisen's sleep. Of course, if they went upstairs, they would definitely disturb Orlante who was in class and Thomas who was being taught.

The former is fine, but the latter, it would be embarrassing to let your duel opponent know that you secretly came to the professor for private lessons in the middle of the night!

In the end, the two had no choice but to return to the dormitory...

"It seems I have to learn magic from the Half-Blood Prince." Ron sighed helplessly.

"It's not that bad actually, is it? If I hadn't accidentally lost my Potions book when I bought books before school started, I wouldn't have found the Half-Blood Prince's textbooks in the second-hand book section, our Potions grades wouldn't be so high, and I wouldn't have anywhere else to learn magic." Harry shrugged and said with a relaxed look.