The Betrayed Hero Who Was Reincarnated As The Strongest Demon Lord

The Demon Army Chief Regal was confronted with a huge dragon wrapped in blue armor.

''──strong.''

It is indeed the most powerful weapon in the Heavenly Army.

In the age of mythology, the Tensou High King (Divine Gear) destroyed many demons.

One of the three - the 'Water King'.

''There is no shortage of opponents.''

Regal re-holstered his sword, which had an eerie design that looked like a combination of bones.

'I'm coming.'

The purple miasma spewed out of his entire body and used it as propulsion to rush forward at super speed.

''The undead style is...''

The Water King opened his mouth and let loose a dragon breath.

Regal did not dodge the blue magic cannon.

On the contrary, he accelerated further and rushed in.

With a direct hit, the skull swordsman broke apart.

''Fragile──no, this is...''

The voice of the Water King sounded slightly quizzical.

'The dismemberment was on purpose.

Regal announced quietly.

The bones that made up his entire body disintegrated and became a myriad of parts, surrounding the Water King.

'Decay,'

White light flooded from the Regal bone group all at once.

The Energy Drain.

It is the energy absorption ability of the undead race.

It is the ability to absorb all kinds of energy, including energy, life force and magic.

The Tensou High King, which is driven by magic power, was supposed to be unable to move if it ran out of magic power.

A moment.

Deploying the barrier force.

The blue dragon's massive body was covered by a wall of shining crystal.

The energy drain's light was played by that wall and dissipated.

''Hmph, did you intend to suck out my magic and make me unable to move?　It's not going to work out the way you planned.

Then we will destroy it head-on.

Regal assembles a group of bones again and takes the form of a skull swordsman.

The shattered armor regenerates using magic.

''Regal, stay back!

I heard Stella's voice from behind me.

If I turned around, I could see that she was accompanied by hundreds of demon clans.

They must have gathered the defense forces and soldiers of the Demon King's Castle.

''Three seconds left until the output of the warding weakens.......two.......one.......shoot!

Along with her instructions, the demons released magic bullets in unison.

Hundreds of trails of light were sucked into the Water King.

''Muu........''

With the explosive light, the blue giant dragon backed away slightly.

''You've seen through the waves and cycles of the output of the Saint King's Warding (Barrier Force) with such precision...?

''Next, 30 degrees right in front of the firing angle!

Stella shouts again.

It seems that the clairvoyant in her forehead is predicting the rise in her opponent's magic power and movement, and directing the most appropriate attack.

Just as before, magic bullets are shot and explosive light flares up.

Hmm, brilliant. The position and timing of the attack is perfect.

The Water King appeared from the other side of the black smoke and was unharmed.

''However, it seems that you lack the firepower to do so. Decisively.''

Hard...

His hull is made of mithril. We can't give him an effective hit so easily. We'll have to chip away at it little by little...

Stella said to Regal, who murmured.

'You don't have to scrape it off. We just need to break it up.'

Regal stepped forward.

He raised his oddly shaped sword, which looked like a combination of bones, to the upper level and looked at the Water King.

''I'm enough for that big guy on my own. The others should back off so as not to slow you down!

The miasma rises from Regal's howling body like a flame.

It spewed out and fleshed out into the Water King with the same - or much more pressure than the previous - super speed.

"Ho, can it still get faster? But it's only a Demon Army Chief class. These are not my enemies, which are built for the Demon King.

The Water King shook his huge body and unleashed his tail.

More claws, more fangs, one after another.

It's a flowing, coordinated attack.

''Chi-chi.''

Regal spewed out miasma each time, changing direction and avoiding the Water King's attacks.

The ground exploded and blew away.

The atmosphere creaked and a shockwave blew up.

I'm not going to be the only one who can do this.

Probably just a graze was enough to shatter Regal's body and other parts of his body into pieces with each blow.

Even though it could regenerate no matter how much it was dismembered, Regal was not an immortal being.

Once each of the bones, the smallest components of the body, are completely shattered, they are no longer regenerative.

(With his offensive abilities, or maybe he could make me disappear.)

Muttering inwardly, Regal sped up even faster.

In the face of an unprecedentedly strong enemy, you can feel your blood flowing.

─ It's strange, this sensation.

If Regal had a body of flesh, he probably would have smiled.

It's been a long time since he lost his mind, but only when he is on the battlefield does he feel the same elation he once had.

Crossing swords with a powerful enemy.

By continuing to fight between life and death.

He has given up love and affection, but this feeling is the only thing that remains the same.

This reminds me a little bit of my human formative years...

Thousands of years ago, when he was still human, Regal was a warrior.

He was a skilled swordsman who was known to be unparalleled in the sword, and he was a brave swordsman who fought against many demons.

There was always a wizard at his side.

He had lived only on the battlefield, and he was the only man he could call his best friend.

Together with that man, Regal continued to achieve results in battle.

Before long, the two of them were called heroes.

Then one day, they fought a powerful demon race.

He was one of the Demon Lord's aides, the Demon Army Chief.

After the battle, Regal and his friends were cornered.

And then - their best friend betrayed them.

"I don't want to die, I don't want to die.

He tried to magically blow up the Demon Army Chief, as well as Regal.

'I will survive at your expense.

How did you come to be so...

Die, you and your demons!

A blazing fire.

That was the last thing Regal had seen as a human being.

Before he knew it, he found himself in the darkness.

The world of darkness where the sun never shines - the world of evil.

He was alive while losing his flesh and becoming nothing but bones.

No, he could not die.

He became a demon - an undead demon - a demon that only those who left a strong grudge in this world could reincarnate.

"I'm no longer........human?

Regal raised his skeletal body.

There was a sense that something inside him was decidedly missing.

There was a sense that something important to him as a human being had been lost.

'Well, I am,'

If you can't get undead, you can't have your heart broken.

I lost my mind.

I don't have a human heart. But...

Tweeting, Regal looks at the Water King.

'There's still something left in me like that.

Deep within the black eye sockets, a crimson gleam flickers.

'It's a hatred of the enemy - and a pride in being a warrior.

Driven only by a negative mind, that's exactly what evil demons do.

The Water King growled.

"Yeah, I'm not a man. I'm a demon,

The miasma from Regal's entire body erupts like flames.

But on the battlefield, as in the days of my human life, my soul burns with the same intensity.

He swings his sword of bone and shouts.

'Come on, make me burn more, God's weapon!

Burning?　You're wrong. Extinguish. Get rid of thee. Gone without a trace.

The Water King spat out a dragon breath of magical power that glowed blue.

Regal fired a miasmic bullet to intercept it, but it dared to be blown away before the Breath.

And then the Breath changed its trajectory in front of him.

It's not just a matter of time before you'll be able to get your hands on it.

"Stella, huh...

She must have commanded the demon troops and had them create a magic barrier at the perfect time.

No matter how much it was the attack of the Water King, a magical barrier created by hundreds of demon clans at the same time could at least prevent one shot.

''You little fish!''

The Water King howled.

"You shall extinguish them all...

I won't let you.

A voice rang out from the sky above.

It was the waiting Underworld Dragon [Belga Elfida].

''Shadowbreath!''

The dragon, which is the Demon King's riding horse, spits out black light bullets.

It's likely that he intended to assess the battle situation and join in at the best possible time.

It was truly a priceless support for Regal.

''Gu.........whoa.......?

As expected, its power is immense.

The water king backs away with the explosive light.

''Didn't it work?　For the moment, have we done our duty to Master Freed?

The Underworld Dragon laughed mischievously.

''It's stopped moving - aim for it!　Target, enemy face!　Flash and lightning magic!

Stella quickly gave orders to the demon army.

The thunderbolts and flash magic released by the demons were slammed into the face of the Water King.

The face of the dragon is enveloped in explosive light.

"I can't see my way out of this...

Regal, now!

I told him to stay out of it, but...

Nevertheless, both the Underworld Dragon and Stella provided exquisite support for each of them.

With their cooperation, they created a thousand opportunities to win a thousand times.

I can only thank them for that.

The rest of the finishing touches were mine.

''Whoa, whoa, whoa!''

Regal rushed forward with a roar.

Considering the difference in strength between them, this is the first and last opportunity.

Make sure to take advantage of it and destroy the enemy──.

This is the end........!

Regal slammed a slash with his full strength.

A large amount of water streams blasted out of the Water King's armor and tried to bounce off of it.

''Hades Blade!''

A moment later, Regal poured all of his magical power into it.

The sword of bone, which easily sliced through the high-pressure water stream, pierced through the center of the water king as it was...