I'm a monster in Demon King's Castle

Upon Black Slope, the radiance was immense, though all of it was the grayish petrifying light; the withered trees, shrubs, and rocks that stretched out their tongues were all slowly frozen when encountering the light, and their surfaces became pitted, as if eroded by time.

Then, a giant strange man with elongated arms was seen smashing a patch of psychedelic geckos, the fragments and scattered magic power blocking the Black Slope fork, even causing the chaotic battlefield behind to freeze for a moment.

What a powerful strange man...

And with a single slap, Li Yue was pleased to see the prompt flashing in his mind.

【Acquired material "Photon Pigment", please confirm...】

"Let's go..." Li Yue telepathically called to Dandan and Yingying, confirming in his mind, and left the battlefield with two or three clusters of light, flying towards the direction of Demon King City.

At this moment, the rear battlefield saw the human allied forces retreating, and the three second-generation skeleton scions entered the pursuit phase; but they, who had been killing with relish, became disinterested after the strange man fled, as if they found the excitement here less appealing than the psychedelic geckos.

"Humans? Demons?" Gothric broke off a minotaur's horn and chewed on it.

"Hunters, perhaps? I heard that hunters above the seventh rank have unique hunting techniques, and that person's technique just now was very unique." Vitric opened a seam in his velvet robe, too lazy to care about the scattering jackalweirds.

"It's only the first day, and a hero has already arrived, so fast?" Thunric obviously knew about the news of Demon King City merging with reality.

"Then let's hurry back too, there will definitely be more heroes coming to Demon King City." Gothric casually flicked the gold chain and put it back around his neck, "When heroes come, perhaps they can disturb the 'Dreamland' of the Skeleton King, and our Light Tomb will have new hope..."

"It would be best if a hero could kill Scouric, so our inheritance ranking could be higher..." Thunric muttered, "I heard that the Forbidden Forest and the Laboratory both want Scouric's head, or... should we also post a reward at the Demon Market? Find some heroes to kill Scouric?"

"If Scouric dies, we won't be friends anymore, you know?" Gothric straightened his gold chain, "The Song of Wither can only be passed on to one skeleton, and I'm next..."

"Who the hell wants to be friends with you, stop hanging gold chains around your neck." Vitric re-draped his velvet robe and also headed back to the city along the fork.

The three skeletons pushed and shoved, deciding to post a reward for Scouric's head on the way when they went to the auction house tomorrow.

There were still many thieves waiting at the bottom of Black Slope, but none dared to mess with these skeletons.

...

Following the dirt road uphill, Li Yue saw Demon King City from the outside for the first time—a castle seemingly clinging to the cliff, most of its area hidden in the clouds, with only one road in and out.

At this moment, sand, stones, and wood were constantly gathering on the road in and out, as if an invisible hand was piecing together and building a real road.

Li Yue guessed that Demon King City had just merged with reality, and the road was under construction.

According to the terrain introduction in "A Brief Guide to Demon King City", Li Yue glanced at a corner of the outside of Demon King City, knowing that it was the Library—the bottom of the Library was shrouded in mist, and trying to climb up would only lead to getting lost in the fragmented space.

Of course, Li Yue didn't plan to use Dandan to calm the space there, lest he had to guard against heroes from the outer wall, still only leaving a psychedelic corridor to interfere with the arrival of heroes as much as possible.

Walking along the road, the end was a cliff, and the gate of Demon King City had been lowered on the cliff, serving as a bridge to the city; faint lights lit up in the turrets above the gate, from the patrolling skeleton soldiers and armor.

Yingying was also entering the city through the main gate for the first time, touching the cliff for a while, climbing the trees for a while, looking at everything with novelty.

When Li Yue observed Demon King City, he always felt that Demon King City seemed to be observing him as well.

Walking on that narrow dirt road, Li Yue directly used the "Photon Pigment" he had just obtained, and his body gradually became transparent—Photon Pigment was actually the pigment in the cortex of the psychedelic gecko, and it was another layer of disguise when used on Li Yue.

Moreover, it wasn't limited to the cortex, "Photon Pigment" could even add different colors to different objects, making it extremely practical, and it could even be used as clothing paint.

Demons also got new clothes.

Li Yue approached the gate of Demon King City and gradually became transparent—first, to try out the newly acquired "Photon Pigment", and second, to see if Demon King City had any defensive mechanisms similar to the mist, which could also be used as a reference for the Library in the future.

But even under the gate, no skeleton or armor noticed Li Yue, the vast Demon King City seemed to be undefended.

"Biting my bony butt... the real world is so sad, it's okay at night, but when daytime comes, we'll suffer again..." On the tower, a skeleton soldier grumbled, "Why did we have to open the city in the first place..."

"You know nothing, where does what you eat and use come from? If the demon expeditionary army sets off, the supplies will be countless times more, even if it comes down to us, there won't be many magic stone scraps, but at least there's a chance to get some!" Another skeleton shouted, "As for the sunlight... wouldn't it be better if we hid back in the tower to sleep? Do you really want to stop the heroes from entering the city? Are you tired of living..."

"Okay, I'll listen to you..." The skeleton stretched its mouth, imagining the scene of the demon expeditionary army breaking through the imperial capital.

"Enjoy the peace, the heroes are about to enter the city, have you thought about where to hide? I hope we can live to the next full moon shift..." Another skeleton silently prayed, praying for the Skeleton King's blessing.

Li Yue, standing below the main gate at this moment, was thinking about the two mages who were coming, and the butler with a dagger... Could the butler get in?

Looking at the two skeletons on the tower... they probably wouldn't stop the envoys from the Demon Market either, so he could only wait in the Library to kill the butler.

Until entering the outer courtyard, Li Yue was not hindered in any way, so he walked slowly, enjoying the tranquility of strolling through the garden with Yingying and Dandan, admiring the flowers and plants in the outer courtyard, listening to the rustling sounds in the shadows, and taking a long time to walk through it.

Passing through the maze corridor, the three demons returned to the Library smoothly.

Tearing open the flesh, Li Yue put down Dandan and Yingying, and Dandan fell asleep in an instant, contentedly savoring the bits and pieces of the Demon Market in his dream; while Li Yue stared at his shadow for a moment, both knowing it was time to count the spoils.

"You can become transparent." Yingying pointed out the material Li Yue had newly obtained, "Can you try it on me?"

After analysis, Yingying felt that since Li Yue could make the freak puzzle transparent, he should also be able to change the color of the shadow—if even the shadow could become invisible, Yingying would be even more elusive.

"It seems... it doesn't work very well..." Whether it was clothing or puzzles, Li Yue had to find a physical object to inject "Photon Pigment" into before it could work, and this method obviously couldn't work on Yingying.

"I see..." Yingying felt that he had missed a world, and then began to take things out of the shadow space and drop them on the ground.

The magic-powered motorcycle was thrown upside down in the bloody corridor, breaking the windshield; but Li Yue suddenly thought of a way to satisfy Yingying's needs.

"If I can turn the pigment into a sensor, maybe I can make you transparent too." Li Yue was still in the stage of expanding sensors, and hadn't performed the operation of "imposing" on anything yet, and it was almost time.

"Really?" Yingying's action of throwing things slowed down a lot, and he turned the magic-powered motorcycle upright.

"Of course." After the Self-Healing Bone and Bone Sword, Li Yue had been spending time on Dandan's particles, and hadn't successfully found a new sensor, at this moment Dandan fell asleep, and the state of the particles on his head was not very stable, Li Yue clearly felt that it was "piercing" deeper, and it was likely to succeed at any time.

After that, it was time to move towards a new "advancement" stage.

"Next... let's take a look at our spoils!" Saying that, Li Yue also threw the magic-powered cannon and the invitation letter onto the corridor, and called the Minis to come and watch.

Magic-powered motorcycle, magic-powered cannon... six auction items from the auction house were displayed on the corridor of the library, and the Minis solemnly admired them.

Then, Li Yue saw the Firewind Valley Prophet's cloak ignite, and then a Mini knocked him unconscious with a sap from behind.

"This person was plotting something, I took him down, asking for a reward." Mini ran to Lulu and received a hard lump of meat.