I'm a monster in Demon King's Castle

As the Crimson Hour approached, Li Yue and Yingying prepared to attend today's "Advancement Studies" course, but before that... there were still some things to do.

After a day of turmoil, only 7 brain spirits survived. Before entering the Gate of Chaos, Li Yue prepared to see what they had chosen as their "Sensory Object."

It must be said that the imagination of the newborn brain spirits was very limited—even after Li Yue's enlightenment, 9 out of 16 were staring at the books piled up in the hall, like a group of students about to take an exam; of the remaining 7, 4 chose some sundries from the library, and their thoughts were so weak that they would never be able to complete the "Soaking."

The remaining three were progressing well, their minds already completely covering the objects, beginning to "Pierce," and the sensory objects they chose were also quite special—one chose the candlelight in the third library, one chose the gate of the first library, and one chose the moonlight in the hall.

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Li Yue himself was also making good progress—the "Brain Spirit Pituitary Gland" was almost two-tenths soaked, and it was expected to be transformed into a sensory object in another five days.

Of course, this was also due to Li Yue's brain spirit body, which had an extremely deep understanding of the pituitary gland from birth, coupled with the blessing of "Absorption," which allowed for such progress.

Li Yue was very curious whether these brain spirits could "Soak" successfully, and also curious about what the effects of flames, doors, and moonlight would be—with Li Yue's limited life, it was of course impossible to take all the good things to act as sensory objects, so it became the best choice to cooperate with other brain spirits.

As long as there was a way to control them.

Li Yue was thinking... should he sign soul contracts with them—after formulating the blueprint of the library with Lulu and Feifei, Li Yue, although his mind was occupied by the "Brain Spirit Pituitary Gland" and the cloak, did not give up absorbing existing knowledge.

In the tattered pages of "The Signing of Soul Contracts," Li Yue found records related to the signing of contracts—although it was only the signing of contracts for low-level demons, it was perfectly applicable to the current brain spirits.

Thank you, Boodybooger.

Soul contracts are divided into several types. One type is a symmetrical commitment, which ends upon completion. This is the type that Boodybooger signed with Oogeyboogey; what Li Yue saw was more thorough, a contract that completely enslaved low-level demons, where the signatory, within the validity period, could not even defy any of the master's wishes.

The validity of a soul contract is witnessed by high-level chaotic beings, making it almost impossible to break—this is also the reason why Boodybooger painstakingly studied but could not find a way to break it.

Similarly, the signing of a soul contract requires both parties to be willing, and the content can also be fine-tuned by both parties, as long as they follow the contract's ritual template and make simple corrections.

Li Yue did not think that the newborn brain spirits would be able to bargain with him. What was slightly more troublesome was the "materials" required for signing the contract—the main materials were of course the blood or limbs of both parties, but there were also some auxiliary materials such as "Demon Bat Wings," "Syntis Snails," and "Tiger-Striped Gecko Feces." Although none of them were very rare, and most of them could be substituted for each other, but at the moment... Li Yue had nothing.

Searching his memories, combined with "A Brief Introduction to the Demon King's Castle," Li Yue knew that "Tiger-Striped Geckos" existed in the cracks of the cage walls in the "Vegetable Garden." He had even used it to eat one of Oogeyboogey's flies, and the feces should not be difficult to find; as for "Syntis Snails," as a common ingredient for Chaos, there must be a lot of stock in the Demon Kitchen.

As for the remaining odds and ends like "Demon Bat Wings"... Li Yue guessed that they should be in the laboratory, after all, so many mages were doing various experiments there, and they must have prepared a lot of materials.

But Li Yue did not plan to go looking for them now.

Li Yue still remembered that there was a mage named "Vinnie" in the laboratory—this female mage who loved to watch the fun seemed very dissatisfied with the fact that "Heart of Purgatory" was crushed by Bosch, and blamed it on Li Yue.

Fortunately, there was no rush to sign a contract with those three potential brain spirits. In the future, he could pay attention to the materials mentioned in the contract...

There really are so many things to do...

Falling into disrepair and waiting to be rebuilt, only hating that one cannot be in multiple places at once, that is the current Li Yue.

After checking the condition of the brain spirits, Li Yue prepared to go to class with Yingying—today was "Advancement Studies," and Li Yue had many questions to ask Mentor, and by the way, collect a few more Demon Sons with the Demon Illustrated Handbook.

As for the saying of "Servant," it had long ceased to exist in Li Yue's mind—brain spirits, Mini Mini... now they were all assets of the library, and Li Yue was the owner of the library.

But before entering the door, there was a small episode—Egghead also wanted to participate in the closed-door war training.

Mainly because when asked what the two demons were going to do, Yingying let it slip, and even introduced the Blood River and Mentor and other big shots, arousing Egghead's curiosity.

"Can they beat me up? Please ask." Egghead really wanted to see the mentors who cultivated the Demon Sons, and looked forward to being beaten.

Li Yue certainly could not judge this, but subconsciously felt that it was inappropriate—Mentor had always been an existence that he could not see through. It would be fine if he had some plans for himself, but if he saw a demon from another world, as a Demon King's mentor... he would definitely take it to study and play with it, right?

Would he stop it then? Could he stop it?

At least for now, Li Yue had not found that the mentors could leave the Gate of Chaos, so try not to let them interact with other things in the library...

"They might dissect you..." Li Yue was not sure what level Egghead was, but in his imagination, Egghead would definitely not be treated kindly.

But just as Li Yue was persuading Egghead, he suddenly received "Attention."

Mentor's "Attention."

"Bring it to see me." Mentor seemed to be in a good mood. "This egg is very interesting, and I also have a lot of things to ask you."

It turned out that, like Li Yue, Mentor also had a lot of things he wanted to say in person.

Li Yue was first shocked, and then immediately figured out something else—was the blessing controlled by Mentor? Otherwise, why did it appear so coincidentally every time?

Especially when killing Boodybooger... that "Rebellion" was very suspicious.

Then, if the blessing was actively initiated by Mentor, this Demon King's mentor should have seen the existence of "Egghead" long ago, and most likely knew that it was not a demon from the Chaos Continent, so he became interested?

"You want me to bring it? What benefits will you give me?" Li Yue could be sure that Mentor had always had some plans, but he had not figured out what they were, so this time it was rare for him to have something he clearly wanted, so of course he had to take the opportunity to ask for some benefits.

At least get rid of "Rebellion."

Li Yue was becoming more and more presumptuous towards Mentor, but he did not receive the Demon King's mentor's malice as he wished—what on earth was this person planning?

"Don't force me to come out and find you." Mentor left a message and stopped paying attention.

When Yingying and Egghead heard Li Yue's words, they immediately realized another invisible existence.

"You can talk directly to Mentor?" Yingying was already somewhat numb to Li Yue's endless methods, but still did not expect that he would be so favored by the Demon King's mentor—they were clearly rolling around in the Blood River together at the beginning, and their test rankings were also in the top two, how could this brain spirit be so much faster than herself?

"Quick, take me there!" Li Yue was not sure if it was his illusion, but Egghead seemed to have grown a circle larger, looking like it wanted to be beaten.

Li Yue vaguely felt that... after Boodybooger's death, Mentor's attitude towards him had changed a little bit, and he didn't know if it was good or bad.