I'm a monster in Demon King's Castle

That day, the Sky Spine was devoured, faith crumbled, and the Tas Empire finally mobilized.

The roaring in the sky came from a flock of iron birds, carrying holy light and spitting silver bullets, heading straight for the demon soldiers and wing demons in the air.

Although the iron skin was crude, and screws occasionally fell off during flight, Li Read recognized them at the sight of the propeller on the nose and the wings on both sides…

Isn't this a f***ing plane?

Following the magic-powered motorcycles and magic-powered cannons, it was not surprising that the Tas Empire could develop magic-powered airplanes.

Although they may not have been mass-produced yet, the aerial advantage of the former expeditionary force may no longer exist in the future.

The airborne magic stones powered the crystal functions on the wings; the crystals emitted dazzling holy light, and coupled with the silver bullets' fire tongues, instantly tore apart the expeditionary force's formation.

Red-skinned demons and wing demons were caught off guard, suffering widespread deaths.

Meanwhile, the light curtain on the ground opened, and in addition to the new model steam-powered mechs and clockwork warriors, hundreds of magic-powered cannons were also set up, standing outside the range of the siege beasts.

The cannons fired in unison, tearing through the red mist; a salvo shattered the First Army's main tent, obviously based on long-term distance calculations.

Siege beasts, gladiators, and red-robed priests were instantly blasted to pieces, in a state of confusion.

?

“His new trick? A demon's carriage?” Yingying and Dandan had both ridden magic-powered motorcycles, and upon seeing the similar structure of the bone carriage, they immediately understood its use.

At the same time, the Tas Empire's army was sweeping away the confused First Army.

“This is bad, you guys go.” Yingying also realized that the battlefield was becoming one-sided; if they left now, they might be beaten to a pulp by the Tas Empire's true elite human forces.

“Oops, to be discovered.” Xin Yuan slowed down his movements upon receiving the kind reminder, “Let them see something fun.”

Dandan deeply missed the magic-powered cannon outside Xin Yuan's chest.

The sky began to rain white.

As far as it was concerned, having nibbled on the Sky Spine a couple of times, the war was not over yet.

Humans and demons were fully at war.

Whether it was a Grand Magus or a Holy Knight, there would be intense magical fluctuations before casting a spell, enough for the red-robed priests to detect and respond to; they had never experienced that before.

Faced with such a weak human counterattack, the demon commanders present didn't seem to have any interest in responding.

It wasn't the only one thinking that way.

“Stop talking nonsense, get out of the car!” Xin Yuan hurriedly used his mind to lift Yingying's physical body, throwing her and Dandan into the Ideal Township.

Who knew that the light curtain would stretch out, covering the mech warrior in mid-air, and instantly teleporting him back to the Holy City ruins.

Shenglun Zhaosi let out a full burp, shrinking his body and turning into a blood-colored vortex in the sky, disappearing in an instant.

Even Oogie Boogie, covered in white plasma, turned into a swarm of white flies, turning and flying towards Demon King City.

Low value always comes with high returns; the good stuff that Memphis and the others fought tooth and nail to gnaw on now existed within the Demon Illustrated Handbook.

“Well, they ate a Light Sword, you got a Light Sword, very good.” Just as he was admiring Memphis's departure, Shenglun also took the opportunity to flip through the Demon Illustrated Handbook, roughly figuring out the origin of the Light Sword.

Anyway, the promotion was a success; Yingying possessed a demon name and also managed to get a share of the feast, so she needed time to digest it.

“Sorry, took the wrong one.” Xin Yuan retrieved the pony and threw another bone carriage to the ground.

Memphis retreated from the battlefield.

“The Tas Empire is getting serious; that's the power of humans.” Shenglun couldn't wait for the Copper Spoon to produce a magic-powered cannon from the library, and to carpet-bomb like that.

Yingying tilted her head in question.

This was Sky Spine flesh and blood that had not yet been collected, as well as unattached faith, raining down on the Chaos Continent.

The Demon King and the two flowers on the throne also dissipated like ripples; the sandstorm in the south subsided, the rainy corridor in the north was covered in ice and snow again, and the high tower hid back into the air from top to bottom…

No wonder the Tas Empire had never compromised with the Papal State, and had not participated in the war even after the collapse of faith; it turned out they had been holding back a big one.

“Hey, our cannon!” Dandan, nourished by the white plasma, returned to its original shape, using particles to form a bowl shape, sensing the Tas Empire's cannon formation.

Shenglun had only fallen halfway when a hand emerged from the clouds.

Xin Yuan threw out a starving, lowered-head pony.

At the same time, steam-powered mechs and clockwork warriors guarded the magic-powered cannon formation, intercepting demons attempting to sabotage the magic-powered cannons—Xin Yuan even saw the mech warrior holding the hundred-meter Li Read, not expecting to meet him again here.

Not caring about the human counterattack, not caring about the gains in the Holy City, and not caring about the disrupted formation of the First Army…

Just as the eight demons turned around to prepare to advance, the mech-modified warrior noticed the bone umbrella carved from a bone tree and immediately perked up.

“Don't worry about that, I have it, we should go!” Xin Yuan didn't want to bear the brunt of the Tas Empire's attack alone, and there was no need to—the feast was not over yet; hurry back home, otherwise who knows what other tricks might emerge.

“You have it?” Yingying shrank into Xin Yuan's body, asking close to his brain.

As if hearing the mech warrior's words, the hand in the clouds pinched a cloud, and then a light curtain was sprinkled directly in front of the bone carriage.

“Don't chase, Torsos wants the Pope's head.” A voice came from the clouds.

A giant Li Read began to extend from within the magic-powered cannon formation.

The bone carriage began to accelerate.

The specific usage and characteristics had yet to be studied; although Xin Yuan hadn't figured it out yet, he already realized that the "Light Sword" was extraordinary.

In their perception, across such a long distance, only a 9th-order Grand Magus or a 9th-order Holy Knight could cause this level of destruction.

Not to mention using the Light Sword and bone marrow to create a god's body, just using it to enhance the Deception Scepter would be good, right?

The white rain continued to fall; the eight demon sons, dragging a half-crippled former Demon King, drove the Ideal Township, flashing with lightning, and drove away from the Holy City feast.

“Not ours.” Xin Yuan also returned to Dandan's side with Yingying.

The mech warrior didn't give up, Li Read propping into the ground, darting toward the bone carriage.

Just as the bone carriage was about to enter the light curtain, the car body suddenly melted into the shadow on the ground; then, the shadow went around to the other side of the light curtain, the car head tilted up, flashing and speeding away.

The mech warrior hatefully dropped Li Read, turned and rushed towards the depths of the Holy City ruins.

Regardless of humans or demons, all the strong who had shared the Sky Spine flesh and blood immediately evacuated the Holy City, each digesting.

Sky-high price.

Xin Yuan felt that this trip was too profitable.

Without Xin Yuan activating it, Yingying instantly melted into the shadow of the Ideal Township; the bone carriage, mixed with lightning, instantly turned and darted out of Li Read's coverage range.

“Don't let it run! Loushan's matter was done by it!” The mech warrior swept Li Read, but couldn't keep up with the bone carriage's retreat speed.

Exchanging one unit of Light Sword requires one hundred thousand good intentions, ten times more than the lowest consumption of brain spirit pituitary in the original illustration book; even provoking Fentus 10 times wouldn't get one unit.

“The concentration is not high, they are all defective products…” Yingying said, but still flattened herself, enjoying the white rain.

Although the iron law of Demon King City was invalid, as long as they escaped back to Loushan, they could still use the Demon Route to return to the library.

The Light Sword and the flesh and blood of the Sky Spine possessed the power to condense one's faith, and were also the main course of this feast.

The roar of artillery and engines intertwined, replacing the angel's song that resounded across the continent.

Shenglun couldn't wait to show the Light Sword to Tom.