The enemy is [Storm Brave] Aerial. The leader of the World Rank No. 1 party. A contractor recognized by the four great spirits of the wind, Sylphid, who controls the wind.
　He left over a dozen demons and a high-ranked party within a hundred ranks with his magic organ crushed.
　His right arm is now the same as Storm. It's called 『Rantian』, and its power is reminiscent of a natural disaster.

　This is 【Remegaton of the ship's horn black magician】 & 【Demon of Immortality】Benou.
　Their identities are the former fourth-ranked world-ranked party 【Black Mage】 Reme and the leader of the same party, 【Brave Man of Fire】 Fenix. Fenix is also a contractor of the four great spirits.

　When we were young, we promised to become the first rank together.
　It's the same for all of us. We will continue to move toward our goal of becoming brave. I knew that our paths would someday overlap again, and that was soon to come.
　We clashed at the Demon King's Castle, and now we are both dressed as demons and facing the world's number one.

''Then, gentlemen. Let's get started.

　The deformed horns covering my entire body were now hidden by blue flames.
　The spirit art that Benue named 'Eternal Flame'. The depth of the spirit art called 'assimilation', its application.

"Boredom of pretending to be the strongest, let's end it here.

　The words we spit out to inspire ourselves are unexpectedly heartfelt.

　We have the utmost respect for Mr. Aerial. Respect is fine. But we shouldn't be cowed by that. He's the best in the world. He is the best in the world and has been a star since we were children. Normally, he's a person who is too nervous to even talk to you. But now, he's an enemy of the Demon King.

　The best and bravest man in the world is defending the Demon King's castle and breaking his loneliness.
　We can do it.

　Our first clash will come from the front.
　As if in agreement, both sides flew straight into the air without any bargaining, and their right fists collided with each other.

　For a moment, the sound disappeared from the world. Maybe it was an illusion.
　Immediately afterwards, a storm and torrential flames flared up, with us as the boundary. Wind blades ran up and down and left and right, and flames raced through the air.
　I'm not going to be able to get my hands on any of them. Seeking a place to go, the fire and wind tried to pass through the narrow space instantly, and the impossibility of it - the dungeon is destroyed.

　The ceiling, walls and floor were ripped open. Like splitting even the earth, a rift is created in the magic space.
　The brave and the demons do not stop.

　Then, in an instant, there were five clashes.
　The reason I was able to respond to the attack and defense at a speed beyond my perception was thanks to Benou.
　Leaving the flight completely to him, I concentrated on the attack.
　Just before the collision, the flames of my right fist rage loudly, so I also put the magic power of my horn in line with it.
　By concentrating on that much, I was able to respond to the attack of 【Storm Hero】 despite being a 【Black Mage】.

　Like fireworks blooming in the night sky, our clash blinked in the magic space.
　Each time, while bringing the dungeon closer to collapse in its aftermath alone.
　With each attack, the continent-cracking attack and the forest-transforming one another into scorched earth.
　We kept flying and clashing, each time consuming a joking amount of magic power.

　--Black magic, but I can't cast it.

　Black magic has to apply its own magic power to the target.
　But Aerial-san is too fast. The only chance to clash with him passes in an instant, and by the time I notice them, they're away, the next clash takes place, and they're away. That's the level of offense and defense.

''Huh, hahaha...!

　Mr. Aerial is really enjoying himself.
　Not only is he an opponent who won't fall even if you hit him with all your might, but he's an enemy who will match you with the same attack.
　Looking at their undefeated record over the last twenty years, you can see how valuable such an opponent is.

　This offensive and defense cannot last for long.
　There's also the problem of each other's magic power, and Aerial-san's wounds are too deep. It's great that he doesn't lose his performance with his gut gouged out, but the leakage of magic power is serious.

　The blow dealt by me and the demons' power is working against the strongest of mankind. It's not a waste of time.
　Even so, the one person I can't defeat is the brave man named Aerial.

"Benou.

"Oh.

I'll leave you to it for a while.

"Oh.

　I can't even try to catch Mr. Aerial myself. I can't fight my way out of there. So what should I do?
　I stop moving my body for a while.
　I don't control my posture, open my eyes, or swing my fists.
　I leave everything up to Benue, except for applying magic to the blows.
　He regulates the flames and moves me like a puppet.
　That's the meaning of the statement of leaving it to him. Benou understood the intent and moved perfectly.

'Do you understand, Remeghton!　Benue!　The way our magic is growing with every blow!　Do you understand?!

　Here's a story.
　A person who excels in a field can be concentrated in a particular industry for a period of time.
　In fact, a sport that hasn't had a boom for years can actually have a big boom one year with the emergence of many geniuses.

　It was said that this was not a coincidence.
　The best ones are aware of each other and influence each other in their endeavors, and they grow more than they would if they were alone. Seeing them up close and personal can inspire others and, as a result, raise the bar for the industry as a whole.

　It's true, in my opinion.
　In short, it's just that it's more competitive to have a competitor.
　Rather than just improving yourself, you can work harder if you know you can't lose to that guy. I think that's all there is to it.

　Since Fenix told me, 【Black Mage】, to aim for the first place together, I was fired up to build up enough strength to be able to stand on par with my best friend like that. I felt energized enough to be able to say such words as "I'll overtake you if I let my mind wander".
　Aerial-san and the numerous adventurers were really, very, very cool, so I was able to work hard to be that.

　The yearning and the fighting spirit brings out the feeling of 'let's try a little harder' in the midst of training, which is painful and difficult and makes me want to collapse right now.
　And now, the thought of 'I can't defeat it at this point' was affecting our magic.

　I'm sure I was pouring my all-out magic power at the very edge of my control, but I'm pouring even more magic power into each blow. And yet, he moved on to the next attack without collapsing.
　Aerial-san was also doing the same thing with the magic power of the spirits. He is in complete control of the storm of his arms, while his body could go ballistic at any moment.

　We are now growing every moment and getting stronger with every moment.

'This is it!　This is it!　I decided to become an adventurer!

　Those who challenged the unknown, challenged the threats, and went to the deepest depths of the dungeon were called adventurers.
　They once went into battle for treasures, for legendary weapons, for peace, for loved ones.

　Mr. Aerial said that he did not originally intend to become an adventurer.
　Although Mr. Aerial was from a rural village, he was not interested in conquering dungeons, which was the best fun in the countryside where entertainment was scarce. He thought it was just a game for grown-ups to play.

　He was taking care of his sick sister and didn't have the time or inclination to overtake the present for such things.
　That changed because he met the real [Brave Man].
　If this man was worthy to hang his life on, he was curious what kind of a profession an adventurer would be.
　His sister saw through his feelings and pushed her brother's back.

　Everyone does their best, they are desperate, and you never know when anyone will kill you. But no one dies.
　A real battle, with a magical body (avatar).
　He was fascinated by the dungeon attack.
　Because of his battles, the audience is naturally drawn to him.
　We can't take our eyes off him, as he enjoys dungeon capture more than anyone else.

''.....Chief of Staff.

Yeah.

　We're ready.

"Remegaton!　Even though you're as expected of you, you can't invade me with black magic right now--

　After an unknown number of collisions, Aerial-san stopped in mid-air.

''........I've never heard of black magic like this before.

You should be flattered. You're my first kill.

　Black magic has to apply magic power to the target. Not just black magic, but all magic. Needless to say, it's the basics.
　If an opponent who can move so fast that the wind blade can't apply it, black magic can't apply it either, after all.　

　That's why - I deployed (,,,,,) black magic throughout the entire space (,,,,,,,).

　If this is the case, there's no way to avoid it. My magic power is full of space. Just by moving, the magic power for his resistance (resist) is being cut down. No matter how fast I am, I'm still running through this space.
　The magic power of the dungeon core has been purified and compressed by my master's horns. It's also my horns are now fully open.

''I will release black magic in all directions, thereby filling the space with it. It's not something that can be done with just magic. How much training do you have to do...

　He'll know what I am. Even the original owner of the horn must have sensed it. At any rate, when he saw me for the first time, he told me that he had the same feeling he had when he confronted his master. I think it was when he asked me to the first place party that I heard that story.

　He's always thought highly of me before.
　But he doesn't know. What I do and how far I train.
　Only with the horns of a master, the magic of the dungeon core, and the efforts I've built up so far there, can I use this technique.

　Time is working against Aerial-san.
　In addition to the magic leakage from his abdomen, he also has my black magic.

''I'd like to keep doing this forever, but it doesn't seem to be possible.

　The sound of a storm. Nearby, the sound of fire.
　Fists clenched. I put my magic power into it. His eyes widen, and a moment later, they both disappear.
　And at the same time, he releases a fist of his entire body.

　Even though I'm deploying the magic power of Benue's flames and horns, my arms are shocked to the point that I feel like they're going to fly off in a thousand pieces.
　The flames are fueled by the storm and continue to change their shape.

　Here, the magic power of the "Storm Clothing" increased even more.
　It's not an amount that can be controlled by a very person, but Aerial-san is taking shape.
　The fists, which had been in competition with each other, move. Slightly, one side has the upper hand. That's Aerial-san's side.

"You guys are strong........!　But I'm a [Storm Brave]........!

　The strongest of mankind. The pinnacle of all adventurers. The world's greatest party. The Four Greatest Spirit Contractors.

I don't care who they are...!

　If we don't win here, there is no point.
　As an adventurer, the world didn't want me to be an adventurer, and I had to leave the party.
　I had no intention of giving up the brave man I once admired, but the reality was harsh to all intents and purposes.
　When I met Mira-san, she took me to the Demon King's Castle, I met the Demon King, and I thought I had found my way.

　Thanks to Mira, I found a new way to dream.
　My magic can be useful. My magic can help you win over the demons. By fighting off the adventurers, he said, I could give hope to all the demons wondering if they were the losers, and increase the number of subhumans who wanted to become demons.

　The dungeon conquest is an entertainment made up of adventurers and demons.
　It doesn't matter if it's a human or a sub-human who is biting into the video board (TV) and getting into the fray.
　It's not a matter of whether you're an adventurer or not, as long as you can lift the viewer's spirits and make their hearts race.

　--Even demons are great heroes...!

　It is a very good idea to have a good idea of what you want to do with it.

"--What...?

　The Eternal Flame Jacket has been defeated.
　But I'm not already inside.

　Just before it was torn, I escaped at a time when Aerial-san's view was blocked by the flames that scattered around him.
　With half the flames that made up the armor - I was flying directly above him.

　There was hardly any magic power left anymore. The horns had returned to his body, leaving all but the part of the horn clad in his right arm.
　I set up my fist again, and all of Benou's remaining flames wrapped around my right half of my body, accelerating it to explode.

''Wonderful...!

　Even that is Aerial-san's way of intercepting them with 'Storm Clothing', but it's not as powerful as it was earlier.
　I didn't give her the grace to put her magic power in again.

.........

　Mr. Aerial's body goes down. Hit from above, down, down. Towards the floor. Down. It's a gradual fall, until it can be called a fall, and then - our plan is made.

"-- black magic, huh?

　My black magic that filled the space is still there. Aerial-san, who continues to fall towards the floor, is blocking our fists, but he himself continues to be exposed to black magic as well.
　It finally shaved off the magic power for resistance (resist) and reached him.

　'Blank'. The magic that his friends and allies had been trying to cast on him.
　The black magic that puts a blank in his thoughts.
　This is not simply to force a time when you can't think about things. No, the effect is just that, but what happens with it is important.

　In order to maintain the magic, you have to be constantly thinking.
　'Storm Clothing', for example, is the best example of this. It is impossible for ordinary magic manipulation to keep the overwhelming magic power clothed in the arm while maintaining the power of the storm. It's a technique that collapses with the slackness of a blink of an eye.

　And now.
　The highest level of attack power, 'Arashi Kata' has destroyed itself and is about to cut the sorcerer to pieces.

''Wha........!

　However, Aerial-san responded to this as well. Quickly, he slashes his right arm with the wind blade and sends it as far away as possible. Immediately after, as the storm that lost control spreads in space, finally.
　Our (...) fists caught the 【Storm Brave】--.

''I--''

You're going down.

　The half of Benue's body that was just pierced by the "Storm Clothing" returns. We further accelerate.
　The momentum continues to build and we slam Aerial-san on the floor.

　Aerial's body sinks as a radial crack runs across the floor and it shatters without further ado.
　My magic was empty, and Benou returned to his humanoid form beside me and fell to his knees.
　With the spirit arts I had just learned, how could you fight me so well? He's a great guy, my friend.

　If Aerial-san stood up here, we would be beaten without resistance.
　Our bodies are shaking beyond their limits, and we tell them to hang on a little longer.

　Aerial-san looked at us.
　There was a hole in its chest.

''Oh ... this ...''

　He covered his eyes with his left hand and muttered in a scratchy voice.

'From the ground up, you're going to have to work out again.

　With a flurry, magic particles scatter.
　It was born from the disintegration of [Storm Hero]'s body.
　--Aerial-san left the stage.

　I think we were stunned for a while. It wasn't so easy to realize.
　You know, I'm not sure we beat him.
　The aerialist, we did it.

　I look at Benue.
　Yeah, we're Remegaton and Benue. That's when I remembered, and the words came out.

"Good job.

　Benou said reverently, "Ha. Then we gave each other a small smile behind our masks.
　I held out my hand, and Benouw grabbed it and stood up.

'We have won, haven't we?'

'Ah, the invasion of the adventurers was prevented by all the demons that took part in this battle.

　It's strange. If it was just me, I wouldn't have believed it.
　It's easy to accept the fact that we were able to win because of everyone else.
　I turn my gaze to the wall where the camera seems to be safe in the collapsing final area.

'No matter what you are, you can never take down the Demon King's Castle,'

　I'm actually on the edge, but I still have to say this.
　This is also the work of the Demon King's Army Chiefs.