I'm a monster in Demon King's Castle

In the following week, the Library entered a period of relative “calm” in its development.

Under the constraints of a healthy relationship, the Library's "bathhouse" was quickly completed, located in the upper cave — Li Yue did not borrow Mini-Mi Ni's hands to build the bathhouse, but personally took care of everything, not only for Egg's soaking but also as a surprise reward for the Mini-Mi Nis.

The bathhouse was divided into two pools, one pool dedicated to serving Egg, a high-end lava pool, which had to be maintained after each use by Egg to remove accumulated lava; the other pool left a space at the bottom, using lava to heat the water above, for the Mini-Mi Nis to bathe in.

This was personally designed by Li Yue, combining ideas from "Tas Empire Anecdotes." It wasn't very refined, but it was practical — when the Mini-Mi Nis finished their busy day, covered in sweat, they easily fell in love with this relaxing pastime, and almost every day they would come to the bathhouse in groups to play.

Unfortunately, the Library didn't have enough water, and could only wait for the Demon Kitchen's food cart to deliver it every day. Bathing once a day was the limit, and it usually ended when the Mini-Mi Nis drank all the water, which could be considered making the most of it, although it was a bit disgusting.

And this problem... Li Yue planned to go to the Demon Kitchen to solve it together after stabilizing the Library's current situation.

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Fortunately, it was during the "closed-door war training" period, and the amount of supplies sent by the Demon Kitchen was several times higher than usual, otherwise, the slave scholars in the Sixth Library might not even be able to guarantee drinking water.

After recognizing reality, the slave scholars no longer made noise, and tried to avoid the Mini-Mi Nis and Brain Spirits when moving around — six or seven people once left the entrance of the Library together, and then never returned, possibly turning into hard meat chunks.

The remaining slave scholars seemed to have reached a consensus, with an unspoken understanding, and lived quietly in the Sixth Library — of course, Li Yue knew what they were planning, and looked forward to the day they climbed down the toilet pit.

During this time, Li Yue also tried to order the slave scholars to teach the Mini-Mi Nis, at least to learn the common human language, but the effect was not ideal, because the slave scholars were now full of thoughts of escaping to the Demon Market, and Li Yue didn't want to force it.

Li Yue felt that maybe he could try again after their hope was shattered.

Boudiboge also died once every day, constantly weakening his control over the authority; the only thing that annoyed Li Yue was that if Green Time went a little late, Boudiboge would frantically flee, causing some trouble.

Wall cracks, corners, and the tops of chandeliers were all searched, and it took half a day to find him, like playing hide-and-seek.

What was even more frustrating was that Boudiboge still retained a portion of the Library's authority. If his rebellious spirit was forced out during the chase, changes in the terrain and sudden attacks from objects in the environment would occur...

Once, when a Brain Spirit was helping Li Yue find Boudiboge, it suddenly betrayed him and attacked a Mini-Mi Ni, hitting the little guy with a soul shock that made him mentally retarded for three days and almost endangered his life.

Li Yue increasingly felt that he should collect those three materials as soon as possible and sign a contract with Boudiboge, so as not to cause chaos by the Brain Spirit Lord running around.

During this time, Yingying did not come to the Library, apparently having learned incredible knowledge in "Advancement Studies" and temporarily falling into silence, and Li Yue did not disturb it.

What further strengthened Li Yue's determination was that one day at Green Time, Li Yue found an invitation on Boudiboge's corpse — the invitee was the Brain Spirit Lord Boudiboge, invited to participate in the third match of the Killing Cup tomorrow night.

The handwriting on the invitation was composed of hundreds of dead flies, arranged in several rows of common demonic language: "Don't forget our appointment tomorrow night, looking forward to your performance in the Killing Cup... But how is your injury? Don't be afraid, I've already arranged it, be sure to seize the opportunity in the second round! Sincerely yours, the terrifying creditor, King of the Arena, Oukibouki."

As Boudiboge's corpse decomposed, the flies on the invitation would explode in turn; when the corpse was completely withered, the last fly on the invitation also broke its wings and splattered, becoming a hideous stain on the paper.

That stain reminded Li Yue... that outside the Library, there were even heavier shadows approaching.

Li Yue hadn't figured out how to deal with this Killing Cup — everything had to be done after signing the soul contract with Boudiboge, and then finding a way to deal with it. The main point was not to attract more attention from Oukibouki to the Library. On this basis, it didn't matter what happened to Boudiboge.

The remaining things were relatively smoother — the other Brain Spirits realized that they wouldn't die as long as they didn't disobey the Skeleton, and gradually developed memory and obedience. Most of them obediently helped the Mini-Mi Nis transform the Library, and the few stubborn ones became chickens to be killed as a warning every day.

Among them, the three Brain Spirits with potential did not disappoint Li Yue. They were sensing fire, doors, and moonlight respectively, and had almost reached a state of selflessness, staying in the Library hall without moving, all looking very hardworking.

Li Yue even gave them names, which were naturally Fire Fire, Door Door, and Moon Moon.

As for Li Yue's own progress... it could be considered smooth — the connection with the authority was strengthening every day, the former corpse, a book, a handful of soil, a little candlelight... several materials had been collected, waiting for Boudiboge's control over the authority to weaken to a certain extent, Li Yue could hold the ceremony.

The "Brain Spirit Pituitary Gland" was about to complete soaking, much faster than Egg's particles — even with Egg's constant explanation, Li Yue still couldn't understand this otherworldly substance, so it slowed down a lot, and could even be said to be far away.

However, the fact that just one particle had such energy made Li Yue even more anticipate the results.

The things in the blue-purple cloak were still not clear, and Li Yue was not even sure of his progress, so he had to continue guarding it and exploring it every day.

In recent Green Times, Li Yue also participated in the "Hero Studies," "Human History," "Humanity's Fall Studies," and "Mysterious Biology" of the closed-door war training together with Egg and Yingying, marveling at the diversity of demons while gaining a lot of useful knowledge.

The "Hero Studies" teacher was a zombie made by the first Demon King using a hero from the first Lamont family, who loved to suck the souls of heroes like drinking milk; the "Human History" teacher was the fallen bishop Horanisang, who was once human, but was defined as a cult by the contemporary Holy See, so he defected to Demon King City — and that was already hundreds of years ago.

The "Humanity's Fall Studies" teacher was named Bao'er, who could be said to be a madam of the Pleasure District, and had a lot in common with Nate Meiere. Li Yue even suspected that she was the authority master of the Pleasure District, so he decisively skipped class the first time he saw her, because she was very good at reading minds; the "Mysterious Biology" teacher was a ghost ship named Gossipsip, active in another facility of Demon King City, the "Preservation Warehouse," which had sailed through the Sea of Death and seen most of the magical creatures on the Chaos Continent.

Among the remaining four courses, Li Yue was most interested in Gossipsip's "Mysterious Biology," and also forcibly memorized several forbidden books in class, recognizing the structure and composition of many mysterious creatures, inspiring new inspiration for the design of demon blueprints — Li Yue was particularly fascinated by a powerful mysterious creature similar to a dinosaur. Coincidentally, in that class, Gossipsip also showed the demon sons the skeleton of this mysterious creature, which was very shocking.

The demon sons of the same period also entered a period of thirst for knowledge. After the departure of the Three Bosh Demons and Finley, the classroom became much calmer, and Li Yue also took the opportunity to improve the Demon Illustrated Handbook, including 214 Nightmare Succubus, 501 Demon Merchant, 1507 Demon Chef, and 401 Red-Robed Priest, bringing the number of Demon Illustrated Handbook entries to 17.

Upon reaching 16 entries, Demon Points +1 — Li Yue was not ready to summon a new otherworldly demon, so he temporarily reserved the points for later use, and could also use them to develop new demon blueprint templates.

Combining the numbers, "distribution," and "Introduction to Demon King City Tours," Li Yue also found some rules of the Demon Illustrated Handbook — sequence 2 corresponds to the Pleasure District, sequence 4 corresponds to the Great Altar of Demon King City, sequence 5 corresponds to the Preservation Warehouse, sequence 11 is the Library, sequence 12 is the Abyss Mouth, sequence 15 is the Demon Kitchen, and sequence 16 is the Vault.

And otherworldly demons like Egg are numbered starting with "99," belonging to a new sequence to be filled by Li Yue.

Every time he went to class, Li Yue would also open the "Abominable" card to absorb the malice of the demon sons. The malice reserve could also meet the daily needs of transforming the Library and providing snacks for the Mini-Mi Nis.

It could be said that, apart from the gradually approaching Killing Cup, everything in the Library was on the right track that Li Yue expected, thriving.

The transformation of the terrain had already taken shape, especially the defense works near the entrance had been built — after Mentor's reminder, Li Yue and Lulu Feifei changed the construction order, giving priority to improving the facilities at the entrance of the Library, to prevent low-level demons from harassing them.

Ground spikes, chandeliers, and snare nets had all been completed, and the first bloody corridor had already undergone several simulation tests, and was in the final adjustment stage. It only needed a few lethality tests to be put into use.

Li Yue seemed to feel that the Library was putting on a layer of armor. Although there was still a lot of room for improvement, it could already block mosquitoes and flies.

In the past few days, some drunken skeletons had passed by the Library, but none of these defense works were used. Instead, they were beaten up and thrown out by the Mini-Mi Nis.

It had to be said that the little guys' swordsmanship was progressing rapidly. Ordinary skeleton soldiers were no longer their opponents. Just Lulu Benmini could easily fight five, and even had the spare capacity to control the skeleton soldiers, calling on her compatriots to come up and practice swordsmanship together.

On this day, Li Yue finally completed the soaking of the "Brain Spirit Pituitary Gland" as he wished, developing a new use for Boudiboge's legacy — with it, Li Yue could temporarily have some spare time to go to the Demon Kitchen to collect those three materials, and come back to completely control Boudiboge.

After all... the next Killing Cup is tomorrow night. Where to go then, and whether it will provoke trouble from high-level demons, all depends on Boudiboge's performance.

"Brother, you have a tumor," Lulu and Feifei sent Li Yue off, pointing to the lump behind Li Yue's head and saying.

"Silly children, this is not a tumor, this is brother's new brain."