The Betrayed Hero Who Was Reincarnated As The Strongest Demon Lord

Bell...?

I defeated the king of fire in another space, and the king of wind that went outside - I defeated the king of wind one after another, and then a huge black dragon appeared in front of me.

It was Belle - the Underworld Dragon Belga Elfida, which was waiting for me at the Demon King's Castle.

Why did you come here?

You're not going to...

I have a bad feeling about this.

"We're in trouble, Mr. Freed.

Bell said to confirm this premonition.

''The Heavenly Fantasy High King has appeared in the Demon King's Castle.

The last one?

No, they merged.

And, Belle.

'Combined?'

Well, it's kind of like three of them merged together and became a cool-looking weapon.

For some reason, Belle's eyes are shining.

''No, combined transformations are so romantic, aren't they?

What is this guy talking about?

According to Bell's story, it seems that fragments of the King of Fire and the King of Wind appeared in the Demon King's Castle and merged with the King of Water, who had already attacked.

It seems that it took on a new form called the King of Light.

Its battle power is much higher than when it is alone, and I heard that Stella and Regal are struggling with it.

So that means Belle flew here to call me to the rescue.

Gleam!

Just then, a flash of light illuminated the surroundings.

"This is...?!

Immediately afterwards, the earth shook violently.

This is the aftermath of the attack by the King of Light?

I'm not sure how many times I've heard that they reached a place like this, so far away from the Demon King's Castle.

I'm not sure if it's a good idea.

I'm going to get on the bell and head back to the castle. You guys will have to come after me.

He instructed Judah and Feria to do the same.

'But be fully vigilant, you know.

I don't know exactly what level of combat ability the King of Light has.

I didn't want to force Judah to do anything, especially since he was wounded in the battle with the Wind King.

The other demons are also worried about the collateral damage if they are allowed to approach him carelessly.

''─The King of Light is strong.

Judah told him.

'After all, it's the weapon that defeated the former Demon King Velfer.

What?

'I only saw him once, too. It was almost as if he and Wölffer were fighting each other, and they retreated. But if that power is wielded to its fullest extent...

Judah's expression was grim.

'The demon world will be destroyed.'

I understand. Come on, Belle.

It looks like we don't have a moment to lose.

"Riukai.

After straddling the black dragon, I made my way to the Demon King's Castle.

As soon as I arrived, Regal was in danger.

I immediately fired a magic bullet to block the giant white knight's slashing wave of the "King of Light".

I'm sure you'll be able to find it. I'm sorry for making you wait.

I got off the bell and called out to Regal.

''Demon Lord.........''

I'll take care of it. Stella and the others will stay back.

I told the wounded Regal and Stella, who was commanding the demon soldiers, and I stepped forward.

''That's the Demon King?''

The King of Light looks down at me.

"Just in time. I'll make it go away.

Indeed, it is a giant.

The intimidating feeling that blows from its entire body is accompanied by a physical wind pressure that slams into me.

I lightly put up a magical barrier and let that wind pressure flow away.

''First... let's see how powerful it is...''

The King of Light's eyes light up sharply.

I wonder if he's measuring my status.

''Is this........?''

And a slight dismay mixed in with his voice.

''Overall level of 4800, 93,000 MP........?　Even that Demon King Velfer is far more than even that Demon King...!

The King of Light's voice trembled.

''Impossible, this kind of ability value.......is it a false fluctuation (bug) in the law of cause and effect.......?''

The King of Light mumbles something I don't understand.

''What's the matter?　You've lost your swagger.

I took a step forward.

"....I am a weapon of God. I am a being created to destroy the Demon King. No matter how powerful my opponent is, I will avenge him.

The King of Light holding his great sword.

''I won't let you kill any more demons and I won't let you destroy the demon world.

I looked at the giant white knight.

'I will destroy you,'

Go ahead and do it, if you can.

As soon as he said it, the body of the King of Light rang out.

Countless light balls shot out from his armor-covered body.

''Homing ray!''

I quickly released magic bullets in the hundreds.

The magic bullets with tracking ability intercepted the King of Light's light ball from every side.

A flower of explosive light bloomed in the air.

I cut through the black smoke that is already rising and the King of Light rushed in.

I used my magic barrier to catch the great sword swung down head on.

Bang!

In the aftermath of the powerful energy collision, the earth beneath his feet split wide open.

''It looks like your attack power is indeed high...''

Even if I don't do any damage to myself, it's going to affect everyone around me.

In that case... "Then... 'Laguna Buster'!

The magic cannon I fired drew a jet-black trail and hit the body of the King of Light.

The momentum of the gun caused his huge body to rise up and in one fell swoop, blowing him several hundred meters into the air.

''I'm chasing you, Belle!

Okay.

I'll ride the Underworld Dragon and go after it.

If we bring it into an aerial battle, we'll be able to reduce the damage to the demon world a bit.

Let's go...

I flap my wings and stick out my right hand towards the King of Light, who has regained his position in the sky.

''Megafire!''

With about thirty percent of the power, he unleashed a top-tier fire magic.

Even though it was in the air, I don't know how much impact it would have if I shot with 100 percent power.

It's half a check, half a small check.

''Nunn!''

The King of Light swung his great sword and cut through the flames.

''Megawater!''

This time it's about 50 percent.

Even so, the King of Light would still prevent it with his sword.

The impact of the shattering impact spread in all directions, causing the atmosphere to tremble violently.

''Lord Freed, look down.

And bell.

If you look down, there are several cracks in the earth from the shock wave alone.

''Even an output of this much power can destroy the surroundings........''

Too much power is a tricky thing to deal with.

Hmm, so that's about it for a guy of high status?

The King of Light grumbled.

'You are indeed strong,' he said, 'but I think you can handle it. But I think you can handle it. If you take a long game, you will tire and I will have a chance.

I'm not giving you a chance. I just don't want to destroy the environment as much as you do.

Nonsense. What kind of consideration does a demon lord give to his surroundings?

What do you say?

I held up my right hand.

The atmosphere trembles.

The demon world itself rings.

I'm going to have to tell you that this is a good idea.

"My full strength...

Focus.

An image that explodes the magic power in your entire body and gathers it into your right hand.

Destruction.

Explosions.

Convergence.

The jet-black sword.

My──the Demon King's own, most powerful sword.

"Convergence-type Vanity Blade.

As I quietly announced it, a black-purple sword of magic power appeared in my hand.

Alright, when I did it in different spaces earlier, it was a crash course, but it looks like I can control it well.

The destructive power is too high, and the full destructive power of the mega-type magic that is usually suppressed - my new jutsu, which compressed it to the size of a sword.

This technique is...?

I don't want to destroy the demon world. I won't let you destroy it. Therefore, I'm going to...

Holding my magic sword at the top, I told him.

"I will dismantle you alone.