Chapter 64: Triumph in the Grand Canyon

As the sun rose high in the sky, casting its radiant golden light across the expansive landscape of the grand canyon, a battle of monumental proportions unfolded. Three colossal mechs stood poised to engage in a fierce struggle against the 9th colossal biomachine monster, resembling a mythical unicorn with its towering form reaching 60 meters, adorned with a gleaming crystal horn that stretched 10 meters long. The horn emitted an eerie black glow, pulsating with a foreboding energy.

Harnessing the formidable power of its horn, the 9th colossal biomachine monster unleashed a devastating gravitational force, enveloping the battleground in a tumultuous maelstrom. Within this gravity field, the giant mechs found themselves locked in a grueling struggle, their movements impeded and their energy reserves rapidly depleting. The immense gravitational pressure taxed their operational systems, forcing them to exert over ten times their usual energy output. The once effortless floating capabilities faltered, rendering the mechs grounded, unable to execute their signature leaps and agile maneuvers.

Compounded by the oppressive gravity, the situation grew dire. The Floating Armored Bikes and Celestial Armors, renowned for their swift strikes and nimble agility, became ineffective in this gravity-laden environment. Narumi, along with the allied forces, understood that their only choice was to rely solely on the strength and resilience of their giant mechs.

Observing the battle from a safe distance of 3 kilometers within the cockpit of giant mech "Avalon," Narumi contemplated the situation. "It's fortunate that we completed the construction of the five giant mechs before the emergence of the 9th colossal biomachine monster," he murmured, his voice resolute. Turning his attention to Seraphina, he engaged the giant mech's communication channel. "Seraphina, you hold the key to victory in this battle. Give it your all, but remember not to overexert yourself, understood?"

Beside Avalon, a new giant mech "Caliburn" painted in a captivating light blue hue with striking red patterns, measuring 17.2 meters in height, knelt down as its pilot, Seraphina, responded with a cheerful voice. "Yes! I'll give it my all and earn a well-deserved reward from Narumi-nii-sama tonight!" Narumi's giant mech cockpit displayed a holographic image of Seraphina, her beaming smile infectious, prompting Narumi to smile back.

With determination and the promise of a reward in her heart, Seraphina focused her mind on achieving victory. She steadied her aim and fired her long-range energy sniper rifle with precision, directing it towards the base of the 9th colossal biomachine monster's crystal horn. As the shot hit its mark, a surge of excitement and determination coursed through her, causing her to exclaim, "Oh! I hit it, Narumi-nii-sama!" Narumi responded, acknowledging her achievement, "That was a fantastic shot, Seraphina. Keep targeting the base of crystal horn until it breaks."

Not only Narumi, but the others also praised Seraphina's skills. "That was an impressive shot, Seraphina. Just try to push yourself even further next time, alright?" Christina chimed in with a hint of tsundere in her voice. "Considering it's your first time fighting in a giant mech, you're doing exceptionally well," Amelia added with a grin. "That was absolutely awesome, Seraphina," Valentia commended firmly. Ravine, as concise as ever, simply said, "Good." Seraphina responded to their encouragement with a smile, expressing her gratitude, "Thank you, everyone. I'll give it my all!" She refocused her sights, aiming for her next shot with determination and confidence.

"Hiiiiiiiinnnn!" The 9th colossal biomachine monster let out a deafening scream as Seraphina's shot struck its base of crystal horn once more. Enraged, it attempted to turn towards Seraphina, who had been positioned in a safe zone. However, Amelia, piloting her giant mech "Galantine" swiftly intervened. With all her might, Amelia struck the massive creature with a large shield, diverting its attention away from Seraphina. Her giant mech, adorned in pristine white with vibrant green patterns and standing tall at 17.5 meters, stood resolute in the monster's path.

"Do not forget me!" Valentia, piloting her giant mech "Gleipnir," shouted with determination as she lunged forward, targeting the leg of the 9th colossal biomachine monster with her long spear. "Hiiinn!" The monstrous creature let out another piercing scream, attempting to retaliate by kicking at Gleipnir. However, with swift agility, Valentia's orange shade giant mech, adorned with striking golden patterns and towering at 17.4 meters, skillfully evaded the attack and swiftly counterattacked.

At the other side, Ravine, piloting her silver-green giant mech "Claiomh Solais," adorned with mysterious dark blue patterns and standing tall at 17.3 meters, executed a stealthy maneuver. With precision and cunning, Gleipnir swiftly closed in on the 9th colossal biomachine monster, launching a surprise attack from below. A large chain scythe sliced through the monster's belly, eliciting a resounding scream that echoed through the canyon. Bewildered, the 9th colossal biomachine monster could not discern the source of the attack, leaving it vulnerable and disoriented.

As time passed, Seraphina's tenth precision shot struck the base of the 9th colossal biomachine monster's crystal horn with tremendous force, causing it to broken and fall down. "Hi...iiiin..." The monster let out a deafening scream, a testament to its weakening state. Simultaneously, the oppressive gravity field that had enveloped the battlefield dissipated, freeing the allied forces from its constraints and infusing them with a renewed sense of freedom.

Upon witnessing this pivotal moment, Narumi issued a command that resounded across the communication channels, "It's time for an all-out attack!" In perfect synchronization, the entire allied force sprung into action, utilizing every weapon at their disposal to strike the vulnerable 9th colossal biomachine monster.

The Floating Armored Bikes bombarded the monster with a relentless barrage of high-pressure magic cannons, while the Celestial Armors unleashed a symphony of destruction with their formidable weaponry. Gatling energy bullets filled the air, energy blades slashed with precision, mighty hammers struck with force, powerful magic spells were cast, and laser rapiers pierced through the monster's defenses.

Two hours had passed since the battle began, Avalon, positioned for the decisive blow, stood ready with dual Proton Laser Blades gleaming with anticipation. With a calculated leap, Narumi's giant mech soared through the air, slashing with immense force at the monster's neck, severing its head in a single, decisive strike.

"It's our victory!" Narumi exclaimed with triumphant fervor. """OH!!!""" The words echoed through the grand canyon, met with a chorus of exuberant cheers from every member of the allied force. A wave of euphoria washed over the battlefield, celebrating their hard-fought triumph against the 9th colossal biomachine monster.