The once ice wyvern king is no more

The act of reviving a being and turning them into undead is defined as "Necromancy".

In my first life, there were only a few people capable of this feat, those that studied the undead arts or those that became an undead themselves. For the latter, they have to at least be on the same level as an elder lich to successfully perform a resurrection. And just to give a comparison, an elder lich is a grandmaster-level existence.

Because of such a huge restriction in power, it's safe to say not many people took up learning necromancy and even those that did didn't take it seriously.

Everyone except that guy...

In my first life I had a friend named Filal. He died in the great war, but he was no doubt one of the strongest demons despite his 7 star ranking.

He really was an oddball. Filal was a maniac who only focused on necromancy, not even the mages who studied the undead arts could match his obsession when it came to that.

It got to the point where he would be sitting in his solitary cave for months on end without taking a break.

But at least his life long research didn't go to waste.

Filal created a technique which allowed him to successfully turn the dead into his subordinates efficiently. On the battlefield of the great war where hundreds of bodies dropped every minute, such a technique was unparalleled.

Filal called the skill "Perfect necromancy." As the name suggests, it is necromancy at its finest.

Necromancy in itself is flawed, it is riddled with flaws and mistakes that cannot be overcome with pure strength alone.

The reason for this is simple. When reviving the dead, you are essentially tampering with the rules of the world. Thus, restrictions are put into place.

Those restrictions made it such that even if you were able to successfully perform necromancy, the revived target would be significantly weakened or become a mindless puppet doll. And that wasn't all. Some of the times, necromancy would fail, causing the caster to have backlash and be injured.

You can think of the it as the world trying to fight back against the unfairness that is reviving the dead. After all, if no restrictions were put in place, everyone would just study it and go around killing tons of people to amass a large overpowered army.

It was for these very reasons coupled with the huge power restrictions that not many people took it up.

However, the technique Filal invented was completely able to negate the world's restriction. He became the first person in history that was completely able to revive a creature and turn them into a undead, with their strength, memories and even ego all attached. The only difference is that they would be subservient to the one who revived them.

Perfect necromancy utilized a creation made out of souls that was similar to that of a shadow pet. I don't really know the details of it but I remember him saying something alone these lines.

"For necromancy to be perfect, you need a catalyst to channel and store their past life."

I remember the creation Filal used for his perfect necromancy was obviously inferior to the shadow pet because of the lacking world energy, but it was still able to complete the task of perfect necromancy.

For Blade that was superior and created with multiple souls and had intelligence, it was a perfect choice. The only difference with Blade is that since he has a mind of his own, I wonder how the merging went?

Honestly I was nervous when performing the technique because I didn't remember many parts from what he told me, but looks like I got lucky.

"Phew."

But that really was a close one. I didn't expect the curses to have so much of an impact even after a thousand years, it was really a surprise.

The amount of power contained within those curses alone is insane, it makes me wonder how the wyvern didn't just give up and die instantly.

But, archmages really are a force to be reckoned with aren't they?

Back then, if I didn't inject my energy at the perfect moment I would've definitely lost that battle and Blade would've been destroyed too.

But...

"Shouldn't I come up with a name for this guy?"

So I say while looking at the wyvern king in front of me.

Well I guess it did respond to the name "Blade", so I can continue to use that name. But how about the species name?

Black wyvern? Seeing as it's scale are all black.

Or maybe demonic wyvern? Because it was made with demonic energy.

Undead wyvern? Well, it was revived so I guess that's fitting.

Or perfect wyvern?

Hmmm. So many good ones to choose from. I wonder what I should pick.

I lowered my head for a few seconds before finally coming up with the perfect name.

"I got it! You are the first ever shadow wyvern!"

I snapped my fingers promptly while Blade lowers his head to bow.

As I continue to get lost in my thoughts, I fail to recognize a few other people had closed in on my location.

"My lord!"

"Lord!"

"Rolan!"

"Rolan!"

Four voices suddenly appeared beside me and I turn to glance at them.

It seems I had been too lost in my thoughts to even sense them coming close, either that or I was tired out from the struggle just now.

Jargon, Zalfious and Zonn immediately jump in front of me and ready their weapons while Lyndis arrives at my side, the slowest of them four.

Zalfious calls forth his shadow pet and absorbs energy from it to charge himself for a super attack. Jargon immediately unsheathes his sword and gets into a stance. Zonn releases his aura, causing a thin layer of light green to form around him. He too takes a stance while wielding his greatsword.

The three of them stare at the newly formed creature, ready to strike at any moment.

"Stop. What are you guys thinking by trying to destroy my new weapon?"

"Weapon?"

Zalfious responds in a puzzled face.

All of them turn to me, finally shifting their gaze from the wyvern.

"Yep. This guy is my new weapon I just made."

"My lord, I don't quite follow. Isn't this the wyvern? Although it does look different."

I step forward and pat Zalfious on the shoulders.

"Zalfious, can't you feel it? The energy it's emanating."

Zalfious turns back to glance at the creature momentarily before letting out a surprised face.

"This is?! Demonic energy? It's so pure!"

"That's right, the wyvern you guys are thinking about is long gone. This here is my weapon, the first ever shadow wyvern king, Blade."

Hmm. It seems they are still having trouble understanding the situation. Well, it does make sense as they probably would've never expected the freezing white wyvern to transform into such a creature filled with such pure darkness.

"Basically I killed it and revived it as my own."

"Amazing!"

"As expected of my lord!"

I can't believe such a simple sentence got through to them. At least the demons seem to get it now.

"HAHAHA!"

"I don't really get it but it seems like you've done something insane. Reviving a wyvern? I've never heard of anyone capable of doing that. No. I've never heard of anyone capable of resurrection itself!"

"I'm getting more and more interested about this demonic energy!"

Zonn laughs heavily while observing the wyvern. He recedes his aura and takes a step back to Lyndis's side.

"You can talk now right?"

I face the wyvern with gleaming eyes. Since Blade was previously a sword it obviously couldn't talk, but could still communicate as it was attached to me. But since it's possessing the body of a wyvern, an intelligent high ranking creature, shouldn't it be able to talk now?

"Yes."

Oh. What a cool voice. So that's what a wyvern sounds like huh? Or is that what Blade himself sounds like?

The others were stunned at the sudden voice exuding from Blade and all fixated their gaze on it.

"Blade."

"Yea?"

Yea? What's up with that.

"How do you feel right now?"

I'm curious how it feels like to turn from a weapon into a wyvern. Or more specifically possess a wyvern's body.

"It feels...strange. Having a body with limbs I mean."

Blade turns his gaze downwards to inspect his body, then turns to his left and right to glance at his wings.

"Anything else? There should be another soul within your body right now. The soul of the deceased wyvern king."

"No. I can't feel anything else."

Hmm? No? That's weird. Perfect necromancy is supposed to allow for memories and egos to be kept intact. Did something go wrong? Or was it that Blade overpowered the previous host when taking over the body?

That could be a possibility since Blade is a way higher existence than the creation used by Filal.

Well, it doesn't matter since it worked.

I was curious about whether or not the wyvern king was from the Kursia kingdom and who cursed him, but looks like I won't be able to get my answers now.

Such a shame, I was going to ask Blade to look into the dead wyvern's memories.

"Hmm."

After pondering for a few seconds with my head down, I turn to gaze at Blade once again.

If we went back to the tribe like this, it would cause a lot of misunderstandings. I wonder if he can use it as well...

"Blade, are you able to use the wyvern king's skills?"

Blade stares at me for a few long seconds before replying.

"Yea."

"Then try polymorphing."

The instant the words left my mouth, Blade's wyvern body immediately shrunk while covering itself with a veil of darkness. It looks sort of like a bunch of shadows clinging onto it.

The five of us just stare silently in awe as we witness the change happening in front of us.

And then finally...

"Ohhh."

I couldn't help but say out loud.

A male, tall stature of around 190cm, handsome face, well-built body with well-defined muscles and black spiky hair.

I guess I should refer to Blade as a "he" now right?

Blade stares at his body while twisting and turning, looking up and down.

"Ah!"

Lyndis suddenly cried out in a high-pitched shriek.

The rest of us turns to Lyndis only to see her covering her eyes.

Oh that's right, he's naked right now. It totally slipped by mind since I was too engrossed with his transformation.