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The First Magic Emperor laughed. "Gather the scattered residue of magic from the air—condense it, refine it—and forge a longsword that can fight demon magic!"
The Elven King said, "They've grown so fast through battle."
Yuno's face lit with confidence. "Wind Sylph Creation Magic — Spirit of the West Wind!!!"
A green longsword blossomed into being in Yuno's hand.
Asta grinned back at Yuno, all swagger. "I'm not losing to you!"
The fearful tide of black magic was pulled back into the sword. Asta's half-shorn hair turned completely black.
The Sword of Possession swelled with power; a terrifying repelling magic radiated from it.
Yuno laughed, "See? We did it!"
Asta gripped the monstrous sword. "I'm going to be the Magic Emperor!"
"Repelling Magic — Demon-Slaying Sword? Black Ripper!!"
"See this, you bastard Yuno?!"
Yuno called, "Asta, hold it together until you can land that final blow. We're going in!"
The two of them charged the demon. A horrifying black creature came at them head-on.
Yuno's green West-Wind spirit sliced through the air, tearing the black creatures around them into pieces.
The black Demon-Slaying Sword erupted with dreadful power; each strike bore unimaginable force.
The demon still had its broken spear in hand. "Impressive show," it sneered. "But can you actually hit me at that speed?"
Yuno and Asta lunged. From Yuno's West-Wind spirit came a savage tornado that wrapped Asta up.
Using the tornado's power, Asta's speed spiked to an extreme.
He thrust the Demon-Slaying Sword at the demon.
It happened so fast the demon couldn't react — Asta's sword pierced clean through!
The demon screamed in agony. "He used wind magic to accelerate — he became faster!"
The Elven King looked up. "Repelling magic rides the wind — wind magic soars through the sky!"
"Perfectly synchronized!"
Bartley's eyes went wide. "It worked!"
The demon's hand released its spear; it wailed in pain.
Then the demon grew even more terrifying. Countless black mouths gaped open all over its body. "Trash!" it spat. "Useless trash!"
"A body with no mana — disgusting. I'll kill you all!" it snarled. "Despair or resistance — you're all toys in my palm!"
Asta stared in disbelief. "The heart that should've been pierced…appeared somewhere else?!"
Those mouths on the demon were murmuring incantations: "Word-Spirit Magic…"
Countless black holes popped open around Asta; tentacle-like monsters with bloody maws lunged to bite him.
Asta held the Demon-Slaying Sword to fend them off, backing toward Yuno's side.
The demon's presence grew monstrous. "I will slaughter you all!"
The black, indistinct creatures spread across the battlefield, multiplying.
"This is the demon's real ability!" someone shouted.
Bartley attacked the suddenly surging black creatures with his dark light-sword. "Even those of us who can handle demon magic are struggling now!"
"If this keeps up—" the Elven King Richter said, "Sorry, can you hold off the ones around you for a moment?"
"We can't let the people of the modern age die here," the First Magic Emperor cut in, standing beside Richter. "These are the mages who carry the future of the Clover Kingdom!"
The demon's cold voice echoed again. "You're nothing but dolls for me to toy with, blinkered fools." It laughed. "Farewell. I will exterminate you all. Return to nothingness!"
Asta bristled at the demon's talk. "Shut up with your monologuing, you disgusting mouth-covered freak!"
"Can you go again, Yuno?" he called.
Yuno answered with a smile. "I should be asking you that, Asta."
"Let's shut that thing up — together."
Black tentacles reared up and lunged. Yuno and Asta attacked in rhythm.
Yuno darted in the air like a sylph of wind. Each time his blade swept, a swarm of black creatures vanished.
"It's because repelling magic works!" someone realized. "That's why the demon dodged the heart this time."
"If Asta's sword had pierced the heart precisely—"
Asta swung the giant blade and cut down the oncoming monsters with brutal speed. "Damn it, it never ends!"
Suddenly pain seared through Asta's whole body. "No—my body's reaching its limit!"
The First Magic Emperor watched the pair battling in the sky. "A boy who uses repelling magic… and the wind-magic boy who fights shoulder-to-shoulder with him."
"They're the only ones we can trust with this."
The First Magic Emperor and the Elven King unleashed a terrible magic. "The Sword of Possession can gather the mana of those bound by bonds and connect to them!"
"My power—what can stand against demon magic—"
"—I'll pour it into the sword and send it to you all!"
"Fusion Magic — Sword of Possession? Protective Radiance!!!"
A terrifying light stabbed through the whole castle and flowed into everyone.
A white light appeared on every person inside the castle.
That white glow shielded them amid the swarming abominations.
…
Live chat—
Erza (Fairy Tail): "That sword magic that cancels out other magic — rare and awesome!"
Gray (Fairy Tail): "Shape magic really is the strongest."
Noelle (Black Clover): "Stupid Asta is going to be so strong in the future, fighting alongside the First Magic Emperor? Didn't see that coming!"
Mimosa (Black Clover): "As expected of Asta — so strong and dependable. I love him!"
Asta (Black Clover): "Hey, hey, hey — what are you all saying? I'm going to marry a nun! When I'm the Magic Emperor she'll definitely marry me!"
Naruto (Genin era): "Wow, Asta's so popular — why doesn't Sakura like me?!"Sasuke: "Bottom of the class…stop daydreaming, power's all that matters. I'll grow stronger."Kakashi: "Sasuke, you still can't let go, huh? We're so similar!"Vegeta (Dragon Ball): "Hmph, boring!"Goku: "That demon looks strong but gross — I kind of want to punch him!"Luffy (One Piece): "I wanna beat that demon up; he doesn't care about people's lives!"
…
On screen, countless tentacle-monsters swarmed Asta; he struggled to hold them off.
At that moment Yuno flashed in, his green sword striking fast. The monster that had latched onto Asta's Demon-Slaying Sword dissolved into smoke.
Yuno planted himself between Asta and the horde. "With this light, you can focus and strike," he told him.
Asta, lacking mana, didn't glow with the white light.
"What's that light? Lucky Yuno," Asta muttered, half-envious.
Yuno: "You concentrate. Give the demon the final blow."
"You big dumb breakthrough specialist!" Asta grinned. "Got it, you handsome genius bastard!"
Captain of the Black Bulls, Bartley, lifted his blade. "I'm not convinced we can do this with just aura and that guy's mana!"
"Tell me where that gross thing moved to, Stone-faced Queen!" he demanded of the motionless woman beside him.
Charlotte snapped, "You jerk — you weren't planning to—" She scowled at his tone, but then said, "Even if you bark orders at me, I'll lend you a hand."
Charlotte's thorned roses twined around Bartley's blade. The vines helped him sense the demon's position.
He poured all his mana into the sword. "We have to hit it."
Asta, Yuno, and Bartley all thought at once: "Everything we've got. One focused, decisive strike. Finish him."
"..."
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