Dumbledore? He knows nothing about MC alchemy.

Lupin looked at the full bottle of potion and quickly glanced at Snape, who shrugged his shoulders: "It's diluted, don't make a fuss."

"Veritaserum? I have nothing to hide from you." Sirius subconsciously gave Snape a mocking look, then pulled off the cap of the potion bottle and drank the potion in one gulp.

The next moment he almost fell uncontrollably onto the grass, clutching his chest and convulsing uncontrollably.

"Oh... I'm so sorry, I accidentally took the wrong one, but this is also your fault, Sirius Black. You... taste... not... right... why... didn't... you... tell... me... now?" Snape bent down slightly, as if he was admiring Sirius's miserable condition at the moment, especially the second half of his words, which he spoke ridiculously slowly, as if he wanted to prolong Sirius's pain as much as possible.

Chapter 187 You know Alchemy

"Antidote Snape, Professor Snape, we are doing serious business now. If you want revenge, come at me!" Lupin shouted at Snape.

Snape just shook his head: "He is much worse than you. If you are a fool, then he is a brainless bad guy. He has no idea what consequences his actions will cause..."

He took a deep breath, as if intoxicated, and then slowly said, "For example, he used his best friend to kill his enemy, but he didn't understand the consequences for his best friend at all, and he became a shameful traitor... Humph... Traitors are more hateful than enemies!"

Unable to stop rolling on the ground, Sirius glared at Snape with his scarlet eyes: "I'm not a traitor! It's Peter Pettigrew!"

Kaisen, who had been stopped by Dumbledore from the beginning, finally couldn't bear it anymore. He shook off Dumbledore's arm and cast a milk magic into Sirius' chest.

Sirius breathed a sigh of relief after seeing the immediate effect. He patted Kaisen's arm and said, "That's not necessary." Then he supported himself and sat up. "I'm not a traitor! If you don't believe me, you can take out your truth serum and add whatever you want to it!"

Snape sneered, but still took out the truth serum from his pocket. Unlike the large bottle of poison before, this time it was only a small bottle the size of eye drops. It was not full yet, with only the bottom.

Sirius took the truth serum thrown by Snape and poured it directly into his mouth.

The next moment his eyes became bright, and he seemed to have lost his soul, becoming an empty shell.

"Have you betrayed the Potters?" Dumbledore came over and asked.

"No."

"Who betrayed the Potters."

"Peter Pettigrew."

"Who was the secret keeper back then?"

"Peter Pettigrew."

"why?"

"It was my idea. I gave the secret of the Secret-Keeper to Peter Pettigrew. I thought we could set up two goals. I would attract Voldemort and the Death Eaters in the open, while Peter Pettigrew would hide in the dark and act as the Secret-Keeper."

At this time, Lupin walked over and asked, "Why don't I know about this?"

"We didn't tell anyone at the time. The only ones who knew were me, Peter Pettigrew, James Potter, and Lily Potter."

Lupin was a little at a loss, and for a moment he didn't know how to ask next.

In his mind, the four of them should be the best buddies in the world. Although he understood that the more people knew about this kind of thing, the more dangerous it would be, and the fewer people who knew about it, the better, he still asked his question.

"Why did you choose Peter Pettigrew over me?"

"Because you're a werewolf."

"what?"

"You will be very weak after the full moon. Greyback will be searching for werewolves, and Voldemort has many preferential policies against werewolves. We know you can't betray James, but comparing your two situations, we chose the safer Peter Pettigrew."

When Kaisen heard Sirius's answer, he slapped his forehead immediately, then he subconsciously looked at Lupin, only to see that Lupin had already kicked Sirius in the face.

With a loud bang, Sirius crashed directly into the square tree behind him, while Lupin walked out of the office angrily.

"This is such a hurtful truth." Kaisen gritted his teeth and was about to go out to chase Lupin, but was directly detained by Dumbledore with magic.

"Hear him out," Dumbledore whispered.

"Hasn't that all I have to say? That's all there is to it. If there's anything important, please let me know when the time comes." With that, Kaisen teleported out of the office and looked at Lupin, who was standing at the end of the corridor with his hands on his hips looking at the iron golem.

"Okay, are you feeling upset?" Kaisen asked, clapping his hands.

Lupin turned around and said, "I'm angry, but I understand. If I were either of them, I would make the same choice. It's like one is 100%, and the other is 99.999%. Although the probability is infinitely close, 100% is always the safest choice."

"That's good. I thought you were out cosplaying as Sunny Doll. I was scared to death." Kaisen breathed a sigh of relief and looked at Lupin as if nothing had happened.

"Do I look that fragile?" Lupin asked back, spreading his hands.

"Very similar." Dumbledore appeared next to Kaisen at some point and said.

".....You're out...Sirius won't be killed by Severus, right?" Both of them looked at Dumbledore who suddenly appeared and said helplessly.

"Severus knows his limits, but I've never been very optimistic about your mentality, Lupin."

"Then you're mistaken."

Not long after, Sirius, who felt like he had died once, also walked out holding the wall. Kaisen looked at Snape who was walking behind Sirius with a confused look on his face.

"What did you do again?"

Snape did not take the blame: "It's not my fault. Maybe I hit my head on a tree."

"Remus, I apologize to you." Sirius said to Lupin with difficulty.

"Oh...actually I'm not mad."

"But you still have to kick me when you need to. How about you kick me a few more times?"

"Just wait." Lupin said with a chuckle.

Leaving the stage to Lupin and Sirius, Kaysen pulled Dumbledore and Snape aside and started talking in private.

"What's the plan next? What do you say?"

"Hold on. Sirius follows his original plan. Before we intervened, there were only Sirius and Peter Pettigrew on the chessboard, plus Karkaroff who was outside. Peter Pettigrew couldn't escape. Our goal now is to pull Karkaroff in."

"The probability is small, but it is not impossible. However, if we interfere with this plan, it will be almost impossible for Karkaroff to take the bait." Dumbledore explained.

"...Why don't we just send a powerful person to find Karkaroff directly and then..." Kaisen said, holding something vaguely in front of his chest with one hand, and holding a rope with the other hand, he casually wrapped it around twice, then held it with both hands tightly, gradually tightening the imaginary rope.

"...Then where can we find such a person?" asked Snape.

Kaisen patted his chest.

"You?" Dumbledore asked doubtfully.

"Oh, you know alchemy." Kaisen said with his hands spread out.

Kaisen: You know alchemy, you know asking for gifts

Also, everyone can see that these two chapters contain a lot of jokes from previous book reviews, so I specially drew this picture, and everyone should be sensible, hehe!

Asking for gifts, you know.

Chapter 188 This old Deng...poet I eat

"I think you're a bit too extreme." Snape said quietly.

Kaisen looked at him strangely.

"Should this be your line?"

"It shouldn't be your job to sneak into someone else's school and assassinate their principal." Snape chuckled.

"Otherwise, I can't let a former Death Eater come to Hogwarts and pose a threat to the young wizards, right?" Kaisen said with his hands spread out as a matter of course.

Snape, the only genuine former Death Eater among the five people present, felt like he was stabbed in the heart.

"Why do you look so weird?" Kaisen asked curiously.

Snape shook his head and said, "Nothing, I have something else to do." Then he left the corridor.

After seeing Snape leave, Kaisen quickly remembered that this was a corridor, and basically every time after class there would be a little wizard passing by this corridor and knocking on his office door to come in and sit for a while.

The flow of people was basically the same as that of the auditorium at dinner time, which was terrifying.

"Alright everyone, if you don't want the young wizards to know that Sirius Black, who caused them to go to school with Dementors, is standing right here in this corridor, please come in."

Kaisen opened the office door and asked them to come in quickly. After closing the door, he deliberately pressed the button to indicate that there was no one in the office. Then he returned to his office area and watched Lupin and Sirius grunt as they drifted the boat with Dumbledore.

..................."That's not right. I remember I set up a ban." Kaisen looked at Dumbledore, who had teleported many times in his office, with some confusion, and the latter smiled.

"Which one are you talking about? I think that thing is constantly emitting magical fluctuations, which is quite dangerous. I stopped it the last time I came here." Dumbledore pointed at the Ender Pearl in the distance, which was supposed to emit space restrictions all the time, but had been shut down for a long time.

"When?" Kaisen asked calmly.

"About three days ago."

Kaisen muttered, picking at his fingers: "Three days ago... Then he saw Sirius getting off the boat and walking towards here: "Three days ago, the house was burglarized, didn't you know! How did you see the house!"

Sirius, who was suddenly frightened, pointed at himself and said, "What happened?"

"Ahem, it's irrelevant. Let's continue our conversation. We have been asking you questions before, and now you ask us too." Dumbledore tried to smooth things over awkwardly.

"Let me ask you... Remus, how did you become a professor at Hogwarts now?" Sirius asked Lupin.

"Isn't my knowledge level enough to be a professor?" Lupin asked in return.

"No, I mean, as a werewolf, how did you survive the full moon? Is it still the Shrieking Shack?"

Lupin's eyes rolled, his Gryffindor spirit was burning at this moment, and soon he came up with an idea.

"Next week is the full moon of this month. You will find out when you come with me."

Sirius agreed without even thinking about it. After all, he had done this kind of thing countless times during his school days. "Of course, no problem."

"That's no problem. I'll come find you here then."

Sirius nodded and looked at Dumbledore again: "I heard from Kaysen and Harry before that Harry is not living well in his aunt's house?"

"That's right." Dumbledore nodded calmly.

"Those two... Muggles, I knew it would happen." Sirius cursed through gritted teeth.

"So you feel regretful now? You wishfully thought that locking yourself up in Azkaban was a form of atonement, but you never thought about Harry's life... After all, you are Harry's godfather. Emotionally, you are his last relative." Dumbledore said quietly.

"...........I asked Hagrid at the time, and he said you would arrange it." Sirius said dryly.

"In fact, being well-arranged and living well cannot be confused. I'm not particularly familiar with that period of history, but the Longbottom family was turned into that state almost overnight by the remnants of the Death Eaters. The fact that Harry has lived safely until now is already a very good result."

Dumbledore looked at Kaisen in surprise, because it was rare for him to speak for himself. Kaisen had never spoken for him before.