Asta didn't just run into the room; he flew, propelled by the explosive, reckless power of his own over-trained leg muscles. He looked like a demon emerging from the dust, his short stature completely irrelevant against the massive weight of the weapon he carried. In his hands was the Demon-Slayer Sword—a slab of rusted, black iron that looked more like a blunt instrument of execution than a proper blade.
Mars turned slowly, his movements hindered by the sheer, grinding mass of his Titan form. His mana-sensory organs—the very things that made him an untouchable god in this room—were suddenly useless. He felt nothing from the screaming boy charging at him. To his highly tuned magical senses, the air in front of him was completely empty. It was a terrifying paradox.
Asta didn't stop to strategize. He didn't pause to analyze the crystal density or calculate the structural integrity of the Nemean Armor. He simply swung.
He slammed the flat of the black sword into the side of Mars's massive crystal helmet.
WHAM.
The sound was glorious. It wasn't the sharp tink of metal on stone; it was a dull, heavy, catastrophic thud that vibrated through the very foundations of the dungeon. The twelve-foot-tall Titan didn't just flinch; he stumbled. The impact sent a spiderweb of cracks across the "indestructible" helmet, the sheer kinetic force bypassing the magical defense and rattling the brain of the boy inside the armor.
Up in the shadows, Lencar, caught mid-jump, performed a desperate mid-air correction. He aborted his spatial shift, twisting his body to slam his boots back onto the stone rafter. He crouched low, pressing himself into the darkness, and let out a breath he didn't know he was holding. His lungs burned.
He watched as Asta landed, his boots skidding across the sea of gold coins, the Demon-Slayer Sword held low and ready. The boy was covered in soot, his clothes were shredded, and he looked like he'd been dragged through a rock crusher—but his green eyes were glowing with a terrifying, unyielding light.
The protagonist has arrived, Lencar thought, his hand slowly relaxing its grip on his spatial ring.
"He really knows how to come at critical moments," Lencar mused to himself, a cold, clinical grin spreading beneath his wooden mask as he remembered how Asta had arrived in the nick of time back in Sosshi Village.
But Asta wasn't alone.
A second figure stumbled through the blasted hole in the wall, leaning heavily on a silver staff. It was Noelle Silva. Her silver hair was plastered to her face with sweat and dust, her royal robes torn at the hem. She took one look at the twelve-foot-tall crystal monstrosity, the ruined treasury, and her fallen teammates, and her face went paper-white.
"What... what is that thing?!" Noelle gasped, her wand trembling in her grip.
"Hey! Jerk!" Asta screamed, completely ignoring Noelle's terror. He pointed the tip of his rusted slab at the towering crystal monster. "You're the one who did this to them?"
Asta's voice dropped an octave, vibrating with a quiet, dangerous fury that Lencar had only ever witnessed through a screen in his past life. Experiencing it in person was entirely different; it was like standing next to a live electrical wire humming with lethal voltage.
"I don't care how big you are," Asta growled, his grip tightening on the hilt until his knuckles turned white. "I'm going to knock that look right off your face!"
Mars straightened his massive form. The cracks in his helmet were already beginning to knit back together with a wet, sickeningly organic crystalline sound. The diamond lattice restructured itself, purging the kinetic trauma.
"No mana..." Mars rumbled, his voice echoing from inside the armor. "How are you moving? You are nothing."
"I don't need magic to kick your ass!" Asta lunged again.
Lencar settled back into his vantage point, his mind shifting gears from panic to pure, predatory observation. The script was back on track, but the variables had fundamentally changed. He looked down at the ring on his finger, feeling the heavy, hungry presence of the Demon-Dweller Sword stored within his Void Vault.
In the canon timeline, Asta would soon be blasted into a wall, where he would conveniently discover the second sword—a lighter, faster blade capable of absorbing magic. It was the weapon that would allow him to borrow Noelle's water magic and turn the tide against Mars.
But I took it, Lencar thought, his eyes tracking Asta's chaotic charge.
Did he feel guilty? Not in the slightest. Guilt was an emotion reserved for those who didn't understand the stakes of the coming war.
A muscle only grows when it is torn, Lencar reasoned, thinking to himself. If I hand him victories on a silver platter, he will die when the Eye of the Midnight Sun attacks the capital. He needs to learn how to survive when the universe doesn't hand him a convenient power-up. This is a crucible(Test). If Asta was to become the Wizard King, he had to learn to transcend the "script."
Down below, the battle escalated into a chaotic, multi-front war.
Mars did not underestimate the mana-less boy a second time. He raised his hands, and the floor of the treasury erupted. Dozens of jagged, high-density crystal lances shot out of the ground, angling directly for Asta's chest.
"I'M NOT DONE YET!" Asta roared.
He swung the Demon-Slayer like a baseball bat. The rusted iron met the crystal, and the magic simply ceased to exist. The lances shattered into harmless, glittering dust that rained down on the gold coins.
But the Demon-Slayer was incredibly heavy. Without a second sword in his other hand to balance his momentum and cover his blind spots, Asta's swings left him wide open. Mars realized this instantly. The Diamond General summoned a crystal pillar directly beneath Asta's feet, launching the boy into the air, stripping him of his footing.
"Asta!" Noelle screamed. She gritted her teeth, forcing her royal pride to override her paralyzing fear. "I am royalty! I will not be useless! Water Creation Magic: Sea Dragon's Water Formation!"
A massive sphere of swirling water materialized around her, tentacles of liquid lashing out. She aimed for Mars, trying to blast him away from the airborne Asta. But her control was still fractured. The torrent of water missed Mars's center of mass, crashing instead against his legs.
It didn't hurt him, but the sheer volume of the water turned the dusty, coin-covered floor into a slippery hazard, slightly destabilizing the Heavy Titan's footing.
"Good distraction, Noelle!" Yuno shouted.
The wind mage had forced himself off the ground, blood dripping from his chin. His left arm hung uselessly at his side, but his right hand held his glowing grimoire.
"Klaus!" Yuno yelled, his eyes locking onto the trembling noble. "Get up! He's just a man in a rock! We are Magic Knights of the Clover Kingdom!"
Klaus Lunettes stared at the commoners—at Asta, who was currently falling through the air and wildly hacking at crystal birds Mars had summoned, and at Yuno, who was fighting with a broken body. The noble's pride, previously shattered by Mars, re-ignited into a fierce, defensive flame.
"Do not order me around, peasant!" Klaus yelled, tears of frustration and adrenaline in his eyes. He forced himself to his feet, ignoring the screaming pain in his ribs. "Steel Magic: Steel Castle's Wall!"
He didn't try to attack Mars this time. Klaus realized his steel lacked the piercing power to break the crystal lattice. Instead, he created sloped steel platforms in the air.
"Use them, Asta!" Klaus commanded.
Asta hit the steel platform, his boots denting the metal, and used it as a springboard. "Wind Magic: Swift White Hawk!" Yuno followed up, sending a concentrated blast of wind that caught Asta in the back, accelerating the boy like a human missile.
Asta shot toward Mars, the Demon-Slayer raised high. "Take this!"
He cleaved downward. Mars raised his thick crystal arms to block. The Anti-Magic sword bit deep into the Titan's forearm, erasing the magic holding the lattice together. The arm shattered, severing Mars's crystal limb at the elbow.
Mars staggered backward, his impassive face finally showing a flicker of genuine shock.
Incredible, Lencar noted from the rafters, watching the seamless, improvised teamwork. They are utilizing Klaus's density for mobility, Yuno's wind for acceleration, and Asta's anti-magic as the payload. It's a flawless tactical adaptation.
But Mars was a General for a reason. He wasn't just tough; he was a survivor of the Diamond Kingdom's darkest experiments.
"You are insects," Mars droned. The severed crystal arm bubbled and hissed. In less than two seconds, the mana condensed, and a brand-new, even thicker arm grew to replace the lost one.
Mars slammed both fists into the ground.
"Crystal Magic: Harpe - Execution Ground."
The entire treasury floor transformed. Thousands of razor-sharp crystal shards erupted from the gold piles, turning the room into an enclosed blender of magical glass. There was nowhere to run. There was nowhere to hide.