I'm a monster in Demon King's Castle

After accepting the mirror shard obtained in exchange for the copper spoon, Li Yue returned to the upper level of the library to heal the freak jigsaw puzzle. He knew it was almost time to head to the arena to collect the remaining shards, and perhaps even find an opportunity to eliminate Oogie Boogie's prized "child"—Beelzebub Weng.

The copper spoon already had an idea of how to complete the first phase of the library's transformation. Next, it just needed time and materials, making the Kingston family's magic mirror indispensable.

Whether for magic cannons, magic locomotives, or some materials concentrated in human territories, the magic mirror was necessary for transactions.

Once the freak jigsaw puzzle was fully healed, Li Yue could once again don his armor and hunt.

With the magic power of the entire library as support, the freak jigsaw puzzle was healing at a good pace. Flesh was constantly growing, piecing together, and filling the wounds. It wouldn't be long before it was completely restored.

During this time, Li Yue, with half his mind resting on the edge of the bath, enjoyed the rising steam, pondering which skin to wear when revisiting the arena.

Although he was very familiar with using the Van Helsing skin, he had become a thorn in the side of the Arena King, making it easy for demons to notice him. Wearing that skin again was obviously not a good idea.

Moreover, the copper spoon needed to disassemble the magic cannon to study its principles, leaving Van Helsing's chest empty, unsure of what to fill it with.

The only other available skin was Grandet's. Entering the arena's safe zone as a merchant was also very reasonable, and the Sand Kingdom merchant Abed, who knew Grandet, was already dead. However, this would require carrying goods…

Whether it was the Self-Healing Bone, Lava Left Hand, or Octopus Tentacle, they were all very distinctive. It would be easy for others to associate Dong Biao with Grandet, negating the purpose of wearing a disguise.

A demon scribe was too rare. The current Dong Biao couldn't just grab Damon Benben and sign a contract, making him his quartermaster and multiplying his assets…

"You can't," After implanting the brain spirit's pituitary gland, Li Yue's understanding of Tom's thoughts seemed to have improved somewhat, quickly grasping his master's intentions.

After saving it in the corner of Template 5 in the Demon Illustrated Handbook, Tom named it "Van Helsing."

Even if the price of Self-Healing Bones was driven up one day, Tom could still sell brain spirit pituitary glands—as long as the library wasn't breached, brain spirit pituitary glands would always be rare materials.

Besides being a material for some magic potions, the taste of Self-Healing Bones was also loved by various magical creatures, so there was no need to worry about insufficient demand.

This just meant first arranging an accountant, who at least had to be good at arithmetic and meticulous, so they wouldn't squander the entire fortune and could also integrate the needs of various departments.

Overall, it would be very convenient.

If the arena's audience seats were still there, looking at the bustling square, Tom might even have the illusion—had he arrived at a demon market? Or perhaps a hero's starting point in some game?

This action naturally garnered a few questions from the Minis, and Tom had to explain Li Yue's specific authority before the little guys understood what an accountant was, and then swarmed to Li Yue to register materials.

"Copper Spoon, Lulu Feifei, Pi Ge, Galarick, then you, Brain Spirit, Buddy Bog…" Dong Biao immediately clarified the priorities for Dong Biao, and Li Yue engraved this ranking in his mind.

In a true sense, Li Yue could hardly be considered a human anymore.

Although Tom completely trusted Li Yue, he didn't plan to reveal the existence of the Demon Illustrated Handbook to him, as being "known" meant there was a possibility of being probed.

Then, he directly sent that set of surgical tools to the Bloody Corridor, asking the brain spirit at work to enchant them with the Filthy Whetstone.

He could stay in the arena indefinitely, and just casting "Self-Healing" could become a hero's gospel. He could also roam around, dissecting demons and hunting for materials, and collecting mirror shards under the guise of researching demon medicine…

【Must keep up with the master's pace… otherwise, I will be abandoned…】

"You can do arithmetic, right?" Tom felt that the Li Yue before him should be a good choice—he was the closest to a human in the library, so there was no need to worry about him spending money whimsically.

"Please also inform me of the production volume of materials with fixed output as soon as possible, so that I can complete the statistics." Li Yue was referring to materials like Self-Healing Bones and Iron Essence that Tom could conjure out of thin air.

"I have found a way to embark on the path of a 'Scholar'. I want to try whether I can become a true Scholar with this body and serve the master…" What Dong Biao said was completely consistent with what he thought.

After the freak jigsaw puzzle's self-healing was completed, while Li Yue's list of needs hadn't been sorted out yet, Tom put on Dong Biaoli's outer shell overnight and fled the library, arriving at the arena.

Looking at the Van Helsing skin in front of him, Tom suddenly felt that as a doctor, he seemed to lack some tools. So, he fused a large amount of Iron Essence and, according to the appearance in 《Human Anatomy》, crafted surgical knives and even a whole set of surgical tools for him, looking quite professional.

Previously, the inventory of materials was the responsibility of the Minis, but after seeing Lulu and Feifei arbitrarily ranking the copper spoon as number eight thousand, Tom realized it was inappropriate.

So, Tom simply converted the number of good intentions that the Little Noises could obtain from the Forbidden Forest in a day, gave Li Yue a very large value, and stated that, in the future, the library's external transactions could directly use Self-Healing Bones as currency.

Li Yue recited the names of the materials he needed as if reciting a menu, and Tom finally understood what this guy was looking for him for.

"Okay, the following are the materials I need: pages of forbidden knowledge, four legs of a time spider, Cinder Rami holy ash…"

In the books sorted out by the brain spirit, Li Yue accidentally discovered the method for making scholar's potions and promotion rituals, and wanted to further enhance his wisdom and learning ability.

So, Tom used Grandet as a base, low-density Self-Healing Bones, binding threads, and octopus tentacles to decorate, and then began to sculpt the face—neat blond hair looked meticulous, the narrow chin was divided into two halves, and the masseter muscles were enhanced. The eye sockets were deep-set and the eyelids were slightly red, quickly kneading out a calm and profound character.

Blonde Li Yue.

"Master…" Just as Tom was immersed in the memories related to that character in his past life, another blonde human appeared on the upper level of the library, standing next to Van Helsing.

Finally, he transformed into a dark blue suit. Tom sensed the new character in Template 5 and shook his mind grooves in satisfaction.

"What's the matter?"

Fortunately, Li Yue had the brainpower enhancement of the pituitary gland, so he was able to cope with so many Minis.

"I can coordinate and manage the library's inventory, the demon market's purchases, and various material needs, but I need the master to clarify the priority of different needs in order to judge whether to satisfy the Minis or the dwarf engineers first…"

Anyway, Skollrek's relationship with the library was almost made clear, and those eight Skull Seventh Ancestors hadn't yet set out with the expeditionary force. Before the Skull King Lidderek of the Light's Graveyard awakened, no one would question the relationship between the two.

"Understood, I will clear the material inventory as soon as possible, calculate the consumption, sort out everyone's needs, and mark the source…"

"Stop." Tom's brain grooves twitched, suddenly realizing that Dong Biao and the copper spoon were both like this, and if Pi Ge, Galarick, the Minis, or the brain spirits all came to him one by one for materials, the various needs of the library would be intertwined, making management very chaotic.

That former slave scholar had completely integrated into the library collective, even taking the initiative to ask Tom to open his skull and embed a brain spirit pituitary gland into his brainstem.

So, Dong Biao decided to open another account, and the identity had already been decided—a doctor.

Next, he would rely on strong "Self-Healing" or the "surgical" operation of egg particles to become one of the heroes exploring Demon King City, completing some tasks that Dong Biaoli was inconvenient to complete.

"No problem." Tom heard what Li Yue was thinking and had no reason to stop his proactive improvement, of course, directly agreeing.

After sorting out the library's economic sources with Li Yue, Tom used the Staff of Deception to announce the appointment of Li Yue as an accountant to all the demons in the library.

"When their needs cannot be met through purchases at the demon market, report the required materials and tools to me, and I will find a way." Saying this, Tom also sent Dong Biao a domino, convenient for contacting him at any time.