I'm a monster in Demon King's Castle

"The Demon Expeditionary Force is extremely dangerous! Their appearance signifies that the Demon King City is initiating a war!" This is an important statement at the beginning of "An Introduction to the Demon Expeditionary Force," a statement from the human perspective.

Li Yue had read the entire book and also discovered that the Demon Expeditionary Force... is an important link for the Demon King City's existence on the Continent of Chaos.

The Demon King City can create demons, but relatively speaking, there are still many resources and souls that need to be plundered—such as the slave scholars in the library, the prisoners in the vegetable garden, and magic stones, demons, and magical materials...

Therefore, the Demon Expeditionary Force is the Demon King City's plundering claws and siege blades—they come from the abyss, and their footprints are all over the cities, villages, and even the royal capitals of the Continent of Chaos!

Wherever they pass, the Demon Expeditionary Force slaughters human warriors and plunders everything of "value."

Most of the plundered prisoners will die in the Demon King City, and only a small number of nobles will become prisoners of war, to be redeemed through negotiations with human negotiators—of course, this comes at a great price... the price of money, the price of blood, and even the price of the entire family's downfall.

Therefore, the Church strictly prohibits the nobles of the Continent of Chaos from colluding and communicating with the Demon King City, but unfortunately, the Holy See cannot completely eliminate this chaotic product of the Demon King City, so demon transactions are repeatedly prohibited but never stopped, and have become an unspeakable secret among the nobles.

However, plundering humans is only a small part of the Demon Expeditionary Force's evil deeds—more often, the Demon Expeditionary Force doesn't even spare cities and lands, using black magic to transform them into the Demon King City's "fiefdoms," expanding the Demon King City's sphere of influence...

Fiefdoms are not directly absorbed into the Demon King City. To ordinary human eyes, they are no different from before. However, whenever the passage from the Demon King City to the outside world opens, some connections will be established between the fiefdom and the Demon King City, becoming an entrance to the Demon King City and a giant mouth devouring mortal souls.

Li Yue even suspects... that Death Town, Deshler, has become one of the Demon King City's fiefdoms, serving a role similar to a gate between two worlds.

So... the Demon Expeditionary Force expands the territory for the Demon King City, which is essentially a territorial dispute, but between humans and demons.

Li Yue thought silently, and then some questions arose—if the conflict between humans and demons is irreconcilable, then why hasn't one side completely eliminated the other for thousands or even tens of thousands of years?

Whether it's a Great Archmage, a Holy Knight, or the Demon King himself, hasn't anyone ever thought of completely ending this war?

Or is the current situation... the result of the two sides pulling each other?

Some kind of tacit understanding?

Li Yue kept this doubt in his heart and continued reading—as a book written by the Minister of War of the Tass Empire, "An Introduction to the Demon Expeditionary Force" does not mention the Brain Spirit at all. At most, it only mentions that the composition of the Demon Expeditionary Force is complex, covering all kinds of demons, and the types of demons in the team will also change depending on the mission...

Then there are the countermeasures that human armies should take against Demon Expeditionary Forces with different characteristics, including encounter battles, annihilation battles, retreat rules, etc...

These are not of much help to Li Yue at present, but they help him understand that in the long war between humans and the Demon Expeditionary Force, due to the demons' powerful combat power and their elusive combat methods, the human army has always been at a disadvantage and has to seek help from the Church.

However, this situation changed somewhat after humans mastered firearms and cannons. Until the Demon Counterattack War in the Calendar of Kai 237 and the Demon Annihilation War in the Calendar of Kai 244, the Demon Expeditionary Force had not appeared in large numbers for several years, and there had been no large-scale battles for a long time.

However, "An Introduction to the Demon Expeditionary Force" was written in the Calendar of Kai 265, and Li Yue cannot judge whether there have been any changes in the war situation between the two sides from 265 to the present 299.

Overall, the Demon Expeditionary Force is the main threat that humans face from the Demon King City, in addition to sporadic demon disturbances, and thus has spawned humans who are constantly becoming stronger in order to crave power.

It's just that the humans who can be called "heroes" are still in the minority. When facing the Demon Expeditionary Force composed of high-level demons, high-level monsters, and even quasi-Demon King-level demons, it is difficult to play a decisive role. Often the battle is over before the heroes arrive on the battlefield.

On the contrary, a large number of cannons and a well-arranged rifle formation... can help them smooth out their disadvantages when facing the Demon Expeditionary Force—so at the end of "An Introduction to the Demon Expeditionary Force," in addition to summarizing the Expeditionary Force's major core tactics, the main focus is on calling on the kingdom to vigorously develop military factories and the mechanical military industry, and strive to improve the basic combat power of the army.

Of course, whether it is due to limited vision or the placement of the butt, the Minister of War of the Tass Empire still emphasized the importance of the knight system, emphasizing that the spirit of chivalry and strong individual combat power can often produce miraculous effects and provide more possibilities for opening up the battle.

What Li Yue didn't know was that this Minister of War became obsessed with demonology in the late stage of his career. In order to enhance the individual combat power of soldiers, he used the blood of captured Demon King Expeditionary Forces to carry out a series of demon soldier transformation plans...

It's just that in the end, he didn't have time to see the plan take shape, and was burned to death by the Holy See in the Holy City of Xindrami.

After reading the two books, Li Yue's consciousness was also slightly tired, but at the same time, he felt a trace of joy from the instinct of the Brain Spirit—perhaps for demons, the Demon Expeditionary Force is the blade of the Demon King City, the god who brings back spoils of war, so some sense of pride is understandable.

Suppressing the last instinct of the main body, Li Yue couldn't help but want to find an answer in his mind, an answer that only concerns his own future—the Demon Expeditionary Force... what is the relationship with the Brain Spirit in the library?

How will Budiboge's task for the Brain Spirits affect the Demon Expeditionary Force?

Will there be any more accidents tomorrow? Can I develop peacefully?

Li Yue's thoughts were chaotic.

More than half of the red Sand of Time had already passed, and now less than a third was left. Li Yue closed the book and found that the library hall was quiet. The four corpses at the door had been taken away by the corpse collectors at some point, and Li Yue hadn't even noticed!

And the Mini Minis had already fallen asleep. The new day's work would arrive in just a few hours.

Changes had already taken place next to the desk—the originally messy piles of books were now neatly stacked, like a fortress built of books, the result of the Mini Minis' hard work all night.

The two little sweet potato desks were used as beds, and their arms were used as blankets, hugging each other and sleeping together, a series of saliva dripping down, as if foreshadowing some beautiful dream.

Li Yue inexplicably had the urge to help them cover themselves with the quilt.

Tsk tsk, getting into the role.

As soon as Li Yue moved slightly, the Mini who was pressed underneath suddenly opened her eyes.

"Brother... aren't you resting yet? If you don't rest, you'll be tired when you work tomorrow..." Mini learned about the importance of "rest" from the story of the textile worker.

"Yeah, I'm about to rest." Li Yue was too lazy to return to the Fifth Library, and was going to lie down on the desk for a nap—anyway, the Brain Spirit is just a lonely brain, there is no trouble of lying down to sleep or sleeping on its side.

As a result, Mini's muddled words completely made Li Yue sleepless tonight.

"Stop making noise and go to sleep..." Mini pushed Mini, "Brother just needs to translate here. After the translation is done, maybe we will have to send books to the Demon Expeditionary Force and serve them..."

"Yes... Expeditionary Force training... is coming to the library again..." Mini muttered, her emotions a little low.

"Wait a minute." Li Yue was startled, "If you say that, then I'm not sleepy anymore..."