Eustis city houses many powerful forces and hidden Dragons, but only three names were nearly equal in fame to the royal family. Those three names are recognized throughout the whole city, from the emperor to the street beggar.

Nidhogg, an A-ranked adventure party made of six people, is said to possess mana core above the orange stage.

Greenheart, a powerful noble family household, has a long history of producing powerful noble magic knights and loyal champions.

And last, the Feng family is one of three main branch family Yi family. They are famous for their alchemy prowess and sinister poison arts.

Inside the Feng family's majestic-looking manor, an elder sat above a seat entirely made of precious longevity stone decorated with an intricate carving made of white gold.

This elder is an ancestor and hidden expert of the Feng family. Yi Feng was said to be someone who perished after exhausting his lifeblood.

But in fact, the Feng family had a big secret. Every core member, before dying, transferred its soul into Iron Winged Insects.

The Iron Winged Insect Tribe was an extremely frightening race that was neither human nor demon. Anyone would feel a chill and disgust when their name was brought up.

Their history and background are mysterious like their constitution, the only thing people know is they came from a cultivators world and their abilities were frightening.

First of all was the ability of reproduction. As long as the environment was right and they got enough things to eat, they would immediately reproduce. This meant that the tribe could produce millions of offspring within a very short amount of time!

Therefore, it was said to be almost impossible to kill off this tribe completely.

Any other demon races could get hunted and enslaved, but the Iron Winged Insects are one of few races that are placed under the Extermination list.

Due to their nature and the existence of the Iron Winged King, they can decimate the entire country and eventually evolve into Iron Winged Emperor.

But even after many years of fighting, the cultivators couldn't get rid of those living tumors, and didn't know they were living under their nose.

While absorbing the life energy, Yi Feng felt a disruption in his hidden nest under district 0.

"Hnn something is killing my kins."

The small jade-like stone on Yi Feng's forehead began to shine, then flew away toward the hidden passage, leaving behind the old body.

This stone was the Iron Winged King, the new body that houses the true soul of Yi Feng.

"Who is able to find my nest?"

By kidnapping people from District 0, he slowly increased his power and cultivation stage, but now on his breakthrough, he required a large amount of sustenance.

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Yi Feng has a dire need of food and blood energy so after receiving the message from his kind, he was happy for the future free food entering his belly.

*ZziiZzii~~*

While flying through the passage, Yi Feng was already thinking of ways to turn the invaders into his substance.

"Go, bring them to me!"

Yi Feng arrived at his nest and sends the command to his kins to chase the intruders in his direction.

Then through the eyes of his kin, Yi Feng finally saw the face of the intruders.

"W-what is this ?"

A lone cry rang out. It was a strange sound that one might expect of a strangled man.

It was beings that were completely outside of his knowledge.

Its body was almost three times bigger as his kin, and its silhouette was terrifying. It possesses overwhelming power, easily decimating a whole group in the blink of its eye. He could not see their expression except their bright red eyes that lack any fear and remorse.

And Yi Feng could count hundreds of them.

His kin's proud iron-like body and mouth that could bite through the steel like body of an expert cultivator could do nothing against those giant's mysterious weapons and armor.

Even the new ones, born from the fallen corpses had no choice but to get slaughtered like ants.

"This can't he be happening! It must be the cause of the tunnel."

"Yeah!"

Yi Feng refused to believe his race got slaughtered like ants in front of these forces of unknown.

He understood that his enemy was using a despicable tactic, leading his kins into a tight, narrow choke point and making his kin kamikaze attacks ineffective.

So he gave command to his kins to retreat back to his nest and lead those things in the open where they could use their true power.

"Hmph! Trying to trick this king!"

Yi Feng said mockingly, observing the figures walk out their tunnels and following his kins.

"Now, you will know the terror of offending my tribe!"

With a smile, he gave the command to his kin to attack. Like a living tsunami, the large wave of insects smashed against the unknown intruders.

Although those mysterious weapons were powerful, against this kind of wave, it was no different than a simple drop in an ocean.

The insects began to overpower them through sheer numbers and they were able to tear through those thick armor. Then he finally saw the culprit behind the helmet.

It was a human, yet seeing through as the cold and soulless eyes, Yi Feng felt like he saw something alien.

It was no corpse puppet, undead, or even a possessed corpse, it was something human yet not human.

"Detected heavy damage beyond recovery. Initiating Self Destruct."

Followed by the empty voice, Yi Feng saw the human and smashed armor both explode with a group of his kin.

"What are they?"

He witnessed many times those 'humans' killing themselves with his kins without any sign of hesitation, wearing a stone-cold face and single sentence.

The small seed of fear finally appears in the heart of the Iron Wing King.

But still seeing the invaders getting pushed back by his kin Yi Feng's confidence began to restore.

No matter what! The iron-winged tribe is still the strongest!

*Thump!*

*Thump!*

*Thump!*

Suddenly he began to hear the sound of heavy footsteps coming out from the tunnel.

*PUNK!*

*PUNK!*

"W-what!"

With a crackle of lighting, Yi Feng saw something cutting through a large wave of his kin in a straight line leaving behind a scorched ground and the remains of his kin that turned into nothing but a fuming puddle.

*Thump!*

*Thump!*

Then he saw huge bipedal monsters that were at last double the size of those things, stepping out the tunnel's entrance.

M3A1 Main BattleMech entered the fray.