Taichi could only stare, his mouth agape, the roar of SkullGreymon momentarily fading into a dull thrum against the impossible sight before him. Where his exasperating older brother had stood moments ago, a figure now gleamed with an ethereal, almost blinding golden light. The armor was sleek, alien, and utterly magnificent, a stark contrast to the monstrous, skeletal Digimon looming over them. The air crackled, not with fear, but with an electric, nascent power. "What... what is that?" Yamato whispered, his voice thin, reflecting the awe that gripped them all. Gabumon, even in his fear, let out a soft whimper of surprise. The golden warrior, his form radiating an aura of unwavering resolve, faced SkullGreymon head-on. There was no hesitation, no doubt, only a readiness that seemed to ignite the very air. Kazuma felt the suit like a second skin, a marvel of form and function. The Legend Driver, now snugly around his waist, hummed with a deep, resonant energy. He hadn't just *transformed*; he had become a conduit for something vast and ancient. The "Enhanced Spatial Awareness" skill he'd drawn earlier activated, painting the battlefield in his mind with an intricate web of trajectories, impact points, and SkullGreymon's vulnerable joints. It was as if time itself had slowed, allowing him to perceive every twitch of the beast's skeletal frame, every ripple of its dark energy. SkullGreymon, momentarily perplexed by the sudden appearance of this new, radiant threat, let out another guttural roar, its dark missile launcher on its back swiveling. Kazuma didn't wait. With a swift, almost imperceptible movement, he vanished from his initial spot, reappearing directly in front of the Digimon's colossal face. His speed was incredible, far beyond anything he'd ever experienced. "Woah!" Koushiro exclaimed, pushing his glasses up his nose, his brain already attempting to categorize and analyze the impossible data. Kazuma threw a golden punch, not with the intent to harm, but to disrupt. The blow, though seemingly light against the armored skull, carried a concussive force that sent a shockwave through SkullGreymon's head, causing the beast to recoil with a pained screech. Dark energy crackled around the impact point, but the golden armor held, unblemished. He flipped backward, landing lightly on a jagged rock formation, observing his opponent. SkullGreymon was pure destructive instinct, but that also meant it was predictable. Its immense power was its only strategy. Kazuma, as Kamen Rider Legend, had more than just power; he had form, technique, and the raw data of countless battles embedded within the Legend Driver. "SkullGreymon!" Taichi yelled, snapping out of his stupor. "Agumon, snap out of it!" But Agumon was still lost, a captive within the dark evolution. SkullGreymon ignored Taichi, its glowing red eyes now fixed solely on the golden figure. It lunged forward, its massive claws tearing at the earth, a whirlwind of rock and dust erupting in its wake. Kazuma met the charge, not with brute force, but with a dance of evasion and precision strikes. He weaved between its legs, struck at its knees, and dodged its tail swipes, each movement a blur of golden light. Each strike, though not visibly damaging, sent tremors through SkullGreymon, rattling its very essence. The "Final Form data" whispered promises of overwhelming power, a crescendo of energy building within the Legend Driver. He just needed the right moment, the right opening. "Legend!" the driver's automated voice chimed, echoing in his mind. "Final Ride!" The message was clear. It wasn't just a physical form; it was an ultimate attack, a culmination. Kazuma saw a brief, almost imperceptible flicker in SkullGreymon's chest plate, where the dark energy seemed to coalesce before each missile launch. That was it. The core, the heart of its corrupted power. He allowed SkullGreymon to overextend, baiting it into a sweeping claw attack. As the monstrous limb tore past him, Kazuma surged forward, his body glowing brighter. The Legend Driver pulsed, and energy began to concentrate around his right foot, forming a vortex of golden light. It was a familiar, yet entirely new sensation, the power of a Rider Kick, but magnified a thousandfold. "Rider... Kick!" he declared, his voice resonating with an authority he didn't know he possessed. He launched himself into the air, a golden projectile streaking towards the Digimon's chest. SkullGreymon roared, attempting to intercept him with its jaws, but Kazuma's enhanced spatial awareness allowed him to twist and pivot in mid-air, bypassing the attack. His foot connected with SkullGreymon's chest plate with an impact that wasn't just physical, but energetic. A blinding golden explosion erupted, engulfing SkullGreymon entirely. The shockwave knocked the Chosen Children off their feet, and even the ground beneath them trembled. Dark energy, previously solid and menacing, began to fracture, spiderwebbing across SkullGreymon's form. The roar turned into a shriek of agony, a sound of pure, unadulterated pain. The golden light dissipated, revealing a battered, smoking SkullGreymon, its chest plate cracked and glowing with residual golden energy. The dark aura surrounding it flickered, struggling to maintain its form. The beast staggered, its movements sluggish, its red eyes dimming. Then, with a shuddering groan, its colossal form began to pixelate, the dark data dissolving into the digital air. The remaining pieces of its skeletal structure imploded inward, collapsing into nothingness. Where SkullGreymon had stood, only a small, unconscious Agumon remained, lying prone on the scorched earth. The Chosen Children rushed forward, Taichi leading the charge, calling out his Digimon's name. Kazuma, still as Kamen Rider Legend, watched, his chest heaving. The surge of power, the sheer intensity of the fight, had left him drained, a deep weariness settling into his bones. The Legend Driver gave a soft chime, and with another flash of golden light, the armor dissolved, leaving Kazuma in his t-shirt and shorts, panting heavily. The power was gone, leaving him feeling profoundly vulnerable, exposed. He stumbled, catching himself before he fell, his legs feeling like jelly. The "Potion of Minor Healing" was still in his inventory. He quickly pulled it out and approached the fallen Agumon, who was still unconscious, but breathing. "Here," he murmured, uncorking the small vial. "This should help." He knelt beside Agumon, gently pouring the shimmering liquid over the small Digimon's head. The liquid absorbed instantly, and a faint green glow enveloped Agumon for a moment. Slowly, Agumon stirred, letting out a soft groan before his eyes fluttered open. He looked around, confused, then up at Taichi, who hugged him fiercely. "Agumon! You're okay!" Taichi cried, tears welling in his eyes. The other Digimon, relieved, crowded around. Kazuma pushed himself up, feeling a familiar pang of exhaustion. He had saved them, again. But at what cost? The power was exhilarating, terrifying, and deeply, deeply draining. He glanced at the still-humming Legend Driver, now a simple belt around his waist. It was a burden, a responsibility he hadn't asked for, and one that seemed to escalate with every 'gift' he received.

Chapter 10: The Golden Rider's Debut