My offensive magic annihilated the Giant Demon King - the Giant High Priestess Born without a trace.

"Mister Born...!
Destroying his huge body... what magic it is.
Hmm, that's some offensive power.

　The three remaining Demon Kings growled at the same time.

''Even though their offensive power is high, I wonder if their defense is good!

　The magician-style demon king - 'Magic Emperor' Eström shouted.

　He waved his staff with a blood-red treasure ball embedded in the tip.
　That treasure ball emitted a dazzling light.

''Megawind!''

　Twelve tornadoes surrounded me.
　The trees in the forest were uprooted and blown away, and the ground was eroded and turned into a crater.

　The highest level magic of the wind system - the 'Roaring Heavenly Breeze (Megawind)'.

　The ability to instantly and even simultaneously launch this level of spell, even twelve spells at this level, was unbelievable.
　As expected of a demon king, that's a great magic power.

　But....

'Burst Wind'!

　I played them back with wind magic.

　The spells I cast were ranked lower than the ones I cast, but my magic status was far higher than theirs.
　I used that difference to forcefully drown them out with a forceful push.

''Mm, you bounced off my magic so easily.

　Eström groaned.

''It's still very magical...!
Then we'll have to physically attack them!

　The Beastman Demon King - "The Crimson Lion" Rosgert attacked from behind.

''Shatter away, rookie demon king!

　Five claws approaching, blasting the atmosphere and creating a fierce wind.

　There was no way to defend against them in time.
　I sidestepped and dodged the attack.

　Immediately afterwards, Rosgert's claws slammed into the ground.

　Gogaaaah!

　With a roar, the earth was deeply split open.

''That's some ridiculous physical force...''

　I muttered, half surprised, half dismayed.
　'It's an uncommon power to create a ground crack with just your claws.

''Well dodged!　But claws are not the only weapons of the beast. The fangs, the tail - if you can avoid them all, try to avoid them!

　Rosgert is quick to follow up.

　The fangs that cut through the atmosphere create a vacuum blade.
　A swirling tail spews out a shockwave.

　When I dodged it, the aftermath of the attack energy is going to tear my body to shreds.

''Lucifer's Shield.''

　But because of the distance between us, I had enough time to chant a spell.
　The advanced magic power barrier that was generated plays back all of Rosgert's continuous attacks.

''Hard........!　Are you going to crush me if I hit you?
Bye.

　I held up my right hand to Rosgert, who had finished all the attacking movements and stopped moving for a moment.

''Belphegor Sword!''

　With the sword of magical power generated, I pierce his body from behind the magical barrier.

''Gah...............''

　The Beastman Demon King collapsed with a cry of agony and became motionless.
　Two more.

It's true that your status is high. It's too high.

　The Knight Demon King stood before me.
　The black horseman threatened me.

''But fighting is not just about simple power and speed. I'll show you how.
I'd love to learn more, sir.

　I held up my 'Belphegor Sword' and said to my seniors as the Demon King.

　The opponent is probably the type that mainly engages in close combat.
　It's easy if you can defeat them unilaterally with attack magic from a long distance, but if you use a magic with too much power, this world itself could be destroyed.

　And the fact that the world is destroyed means that Stella and her friends are also damaged.

''All right. Time for instruction.

　Announcing, Vrizela let her rider gallop.

　Fast──!

　It's truly one man and horse.
　Before I can cast an interception spell, Vrizela invades my space.

Nun!

　The sword shot from horseback, I barely received the sword of magic power.

　Two more blows, three more blows....
　With skillful feints, I couldn't surpass the tip of the sword that struck me like a lightning bolt.

''Belphegor Sword!''

　He produced a sword of magic power in his left hand as well, and managed to prevent it with his two swords.

''Lukewarm!''

　Vrizela's sword accelerated further.

　The two magic swords are severed from the middle.
　This guy - can he even cut the magic power I created?

''Ragnabomb!''

　Surprised, I unleashed an attack spell in a counter-like manner.

''Guh........!

　Vrizela blows up with a pained cry.

　Me and the Knight Demon King confronting each other at a distance every time.

　I got my spell in time, but that one was a bit chilling.
　As expected, my opponent is only a Demon King.

　Moreover, that guy's sword technique was familiar.

''It's similar to the Xyrus style sword technique...?''
Xylas?　Hmm, the name of the person I once taught a sword to play with.

　Vrizela smiled faintly.

　The Zairus school of swordsmanship....
　It is one of the strongest swordsmanship that has been widely passed down on the continent.

　The founder, Zyrus, is an unparalleled genius knight who was proclaimed the 'Sage of Swords' hundreds of years ago.
　I'm not sure if it's a good idea, but I'm sure it's a good idea.

'I see. So he left his own school of swordsmanship for posterity?

　The Knight Demon King muttered.

''But you seem to know a lot about human swordsmanship, this generation's demon king.
....!
What's up?　I can see your hesitation.

　Vrizela galloped with her rider, and once again entered my space.

''Meteoblade!''

　I produced a sword of fire and used my full reflexes to surpass its slash.

　However, I was soon defensive.

　Vrizela attacking.
　Me, defending and avoiding.

　After more than a dozen rounds of offense and defense──.

Shh....

　A hot pain pierced my right shoulder.
　Fresh blood flew at the same time.

　The sword mixed with a bright feint was slightly more than my foresight.

''I'm not naive enough to prevent you from using your physical abilities alone. My sword.''

　Vrizela tells me nonchalantly.
　The slash accelerates further and hits me from all sides like countless meteors.

　I don't have time to cast a high-ranking spell.

''Fire Arrow!''

　In a flash, he produced dozens of fire arrows and released them.

''To no avail!''

　Vrizela sliced through all of that in an instant.
　The blast popped, and I fell back hard from the wind pressure.

'No, I'm right on target.'
'I see, so that was not an attack, but rather an attempt to use the blast to get in time.

　Vrizela laughed again.

'Looks like you can use your own powers to fight, as well as force push.
I've done my fair share.

　Mostly when I was human.

Well, the successor to the Demon King has a lot to answer for.

　Vrizela's stance changed.

'Then can you take this blow as well?

　He held the sword in his left hand and grasped the reins with his right hand alone, to an extreme forward leaning position.
　At the same time, Vrizela's sword was covered with a blue-white lightning flash.

''Exquisite technique 'Magi-Breaker' - a slash that has increased anti-magic power to the extreme, it cuts through all magic defenses. And the speed is so fast that no demon race can react. Can you break this?

　In other words, an absolute deadly sword that can neither evade nor defend itself.

It's quite tricky.

　I growled a little under my mask.

　........There's a way to win.
　If I used a mega-type attack spell, the highest level of magic, I could probably defeat Vrizela.
　At the very least, it should be able to inflict a great deal of damage.

　But that attack could destroy the Dreamscape World (Nightmare World) itself.

''It could cause damage that could kill Stella and the others...''

　So I reject this idea.
　I needed a spell that would not damage this world and would only kill Vrizela.

　I called up the spell list and searched for it.
　But all that showed up were mega-type spells.

　This list basically shows the best spell for the situation.
　However, the definition of 'the best spell for the situation' seems to prioritize 'defeating the enemy' only.

　It doesn't seem to take into account protecting your friends, so you'll have to choose your own spell.

"Well, what do we do now...!

　I groaned softly.

　There was no time left to wonder.
　I have to make a decision now.

　To win.

　To protect Stella and the others...