The duo twin Quantum

"The first year?... but I sense a delightful aura!" it said with a grin.

Four of them summoned their guardians as the situation unfolded. Haruto, capable of shaping and manipulating solid rock, is a Stone Bender known for his precision and resilience. Kaito, an Earth Bender, specializes in harnessing the raw power of Earth, excelling in large-scale movements and fortifications.

Meanwhile, Kenya's Mist Bender abilities allow him to control and obscure with vapor, favoring strategy and concealment over brute force. Each role complements the others, creating a balance of strength, versatility, and cunning.

Their guardians exchanged glances; Haruto's guardian, a towering figure made of jagged stone, flexed its muscled arms, its movements echoing their unspoken trust. With every motion, it seemed to draw strength from Haruto's determination, ready to form shields and walls at the slightest command, embodying their shared resolve to protect and endure.

Kaito's guardian, an embodiment of flowing earth, shifted restlessly, eager to manipulate the terrain into defensive structures.

Kenya's guardian, a wisp of ethereal mist, floated serenely, its ephemeral tendrils moving like gentle tendrils of a breeze.

Kenya nodded to his guardian, who then transformed into Katana. Enveloped in a light purple aura, Katana rushed toward the girl controlling Yuma's body. Haruto and Kaito, witnessing this, were left wide-eyed in confusion.

"What's he doing?" Kaito exclaimed, puzzled that they hadn't made any plans.

"Uh... don't tell me... he wants us to escape?" Haruto responded, glancing at Sei, who had not summoned her guardian. 

Katana surged forward with blinding speed, Kenya's intentions clear yet baffling to the onlookers. The aura around him glittered like stars as he reached the girl, but instead of engaging, he coiled around her in a defensive stance, his energy rippling outward like a protective barrier.

Kaito's heart raced. "What is he playing at? We can't just stand here!"

Haruto bit his lip, processing the strange feeling; "Maybe… maybe he's buying us time? If she's focusing on him, we can slip away!"

Sei finally broke her silence. "No, not like that! Kenya's just pissed off from last time!" She sighed and glanced at Haruto and Kaito, her eyes revealing that she had some plans.

"The duo twin Quantum!" she exclaimed, smiling like a playful child, making two peaceful hand gestures as she spoke.

"Huh?" The two guys exchanged bewildered looks, clearly confused by her words. Even their guardian, who was staying with them, looked at Sei with a puzzled expression, as if wondering how she knew that!

Clang!

The loud sound drew their attention to Kenya's battle. Sei took the opportunity to glance at them again and explain her meaning. 

"Okay! The first year of this semester just focused on inner aura training with a guardian. But I know a guy from the old area clan who knows about these aura twins," Sei said, her eyes becoming more serious and her tone shifting.

Kaito, who hadn't gotten along with her during their first meeting, looked at Sei and asked, "What's your plan?"

"Kenya and I will buy you guys time until it succeeds… hurry up, we don't have much time!" she responded, turning her attention back to the fight where Kenya was battling with a mist swirling around him like a serene morning after a long rainy spell.

Kenya swung his katana at the girl, the blade shimmering with an ethereal purple aura as it sliced through the air amidst the swirling mist, the sound of the metallic whoosh cutting through the eerie silence. The fog seemed to part for the weapon, creating a fleeting, spectral path as it descended in a swift arc, aiming unerringly for its target.

Yuma, a monster in a girl's body, wielded her thunderous power against Kenya. 

Yuma's eyes sparked with electricity, a violent storm brewing beneath her calm exterior. She raised a hand, summoning a crackling bolt of lightning that arced toward Kenya, illuminating the mist with a blinding flash.

The air hummed with energy as the two forces converged, the katana's blade clashing against the supernatural charge.

Kenya pivoted, the momentum of his swing carrying him into a fluid motion, dodging the crackling energy that seared the space he had just occupied.

He felt the heat of Yuma's attack, a warning shot that had promised devastation. With a fierce determination, he gritted his teeth, grounding himself for the next strike.

"Hah! You think a show of power will scare me?" Kenya yelled, his voice cutting through the fog like his blade through the damp air, each word dripping with conviction.

He channeled his energy as the katana buzzed softly in tune with his will. With a flick of his wrist, he released a wave of purple energy that cleared the mist, revealing Yuma's form in sharp detail.

''White Blood'' Kenya spun, his katana raised perfectly to clash against her outstretched hand, sending sparks flying. His violet and red aura shimmered, and his dark purple hair made him resemble a grim figure from the night, come to claim souls.

Yuma deftly leaped back, dodging the strike with acrobatic finesse, calling forth a rumble of thunder in the distance. "Come then, let's see if you can handle the storm," she challenged, her laughter mingling with the ominous approaching rain.

Swing!!

Suddenly, a water aura katana swung toward her with great force. Yuma dodged and turned to see the source of the surprise attack; Sei, wielding her blue blade katana and accompanied by her water guardian.

"Haha!" With a predatory gaze, her red eyes fixed on Sei, smirking at her for not paying attention.

"What's Sei?" Kenya asked, approaching her, but received a hard hit on the back from Sei.

''A fool! Do you want to die?" she exclaimed with wild eyes, her hand indicating she struck him.

"What?" Kenya exclaimed, touching her back after he received a painful blow, turning to her with wild eyes. 

"Hahh!" She looked back with wild eyes as Kenya smiled and laughed, knowing he was in the wrong. 

"Hey!" Sei turned to look at a monster and continued, "The aura you use isn't yours, right?"

"So what?" Yuma, a monster, grinned with a smirk as if it were no big deal. However, it closed its smirk and looked at Sei with serious eyes. "What's with your smirk?" it asked. 

"I will show you what a real Quantum Bender is," Sei replied, smirking back at Yuma.

Sei exchanged glances with Kenya, who was standing nearby. As he turned to look at her, he raised his right eyebrow, knowing what she wanted to do.

They closed their eyes as their hand, gripping the sword, moved to touch its hilt with their left hand. The surroundings fell silent, while an aura of light blue and violet intertwined, causing the area to grow cold until it was frigid. Snow began to fall slowly around them.

Amidst the heat of summer, a surreal spectacle unfolds as snowflakes begin to dance gently from the sky.

"Black Snow," they spun, standing at the center of it all, their katanas gleaming under the unusual light. With each powerful swing, the blades slice through the air, creating strong currents that send flurries of snow swirling around them. 

The contrast of the glistening white against the vibrant summer backdrop heightens the magic of the moment as the warriors move with grace and precision, their movements echoing the quiet beauty of the falling snow.

Yuma, a monster, stepped back and saw something it had encountered before, its face showing fear while its eyes displayed anger.

"Don't kill the girl," a voice suddenly commanded in its mind.

''Took her to me!''