We're The Quadruplets!

"Why don't you use your flame aura, Sei?" Takeru paused his attack and yelled at Sei.

He fixed his intense gaze on Sei, who was lowering her katana, a fierce weapon of lethal intent. As she shifted her focus to Takeru, he sensed the tension in the air.

''Hzzz! I won't need to use it!'' Sei declared defiantly, tightening her grip on the katana as if it were part of her. At that moment, her irises turned pitch-black, ominous of the power she was about to unleash. 

''Whirlpool Galaxy!'' she called out with conviction. Her words transformed the battlefield into an endless black void. Enormous galaxies floated serenely above a tranquil, mirror-like sea that reflected the cosmic wonders above. 

Sei stood like an ancient samurai warrior, exuding formidable strength and grace. The black katana shimmered mysteriously, appearing to swim through the air as if it were immersed in water. 

As she wielded the katana, a surge of energy coursed through her, the blade resonating with the universe's pulse. Each movement became a graceful dance of fate and intention amid celestial beauty. Pulsating stars blinked into existence, casting ethereal light on her fierce determination. 

Shinji and the other students, including Takeru, stared wide-eyed in shock at Sei's aura. Takeru took a step back to shield himself from a potential attack, while the rest of the students also moved away from them.

"Embrace them," she whispered, her breath merging with cosmic winds, her heart in tune with the symphony of creation and destruction.

Each step conjured shifting constellations, and ancient wisdom flowed through her veins. This was more than a battlefield; it was a canvas where the continuum of space and time unfolded.

As Takeru, frozen by water magic and enveloped in a freezing aura like a black hole, fell repeatedly until he sank into the depths of the sea, unable to harness his fire aura.

With a fierce cry, she launched forward, her katana slicing through the air, leaving trails of luminescent stardust. Each swing resonated like a celestial bell, echoing through the void. Galaxies trembled at her presence, and reality itself seemed to shift as she moved, a singular force amid infinity.

"Whirlpool Galaxy 2!" she called again on level-up power, and the cosmos responded. Astral waves enveloped her, lifting her into a crescendo of power. She felt the gravitational pull of every star and planet, the swirling dance of matter and energy surrounding her as she clashed with her foes.

The first adversary lunged, their weapon a dark counterpoint to her radiant katana. Their clash reverberated like thunder, sending shockwaves through the void. Sei channeled primordial energy, forming an ocean of motion, each strike harmonizing with the universal rhythm of creation.

As they dueled, her mind opened to the expanse around her, visions of galaxies swirling, colliding, and merging within her consciousness. Each spark of light expanded into potential, revealing that victory lay not just in defeating her opponents but in transcending fate itself. The black ocean beneath her shimmered, summoning ancient energies to empower her resolve.

With a final, resolute cry, Sei pushed beyond her limits, the katana igniting with the brilliance of a thousand suns. At that moment, the battlefield transformed—an aurora of colors erupted as she unleashed the force of the Whirlpool Galaxy, a radiant tempest destined to carve her legend into eternity.

''Sei!!!!'' A powerful voice interrupted Sei, halting her attack on Takeru, who remained frozen like a statue as if submerged in deep water.

Jin, accompanying Kaito, alongside Keigo, shouted at Sei to stop her attack. While he approached her with a worried expression, Kenya and Kenjuro rushed to Sei and hugged her.

Sei fainted after releasing all her aura power and fell into Kenya's arms. They exchanged worried glances with Kenjiro, then turned to see Jin approaching.

"Sorry, Takeru, we have to go now," Jin said firmly, glancing at Takeru, who had just relaxed his grip under Sei's powerful aura before she collapsed. Takeru met Jin's gaze, sensing the gravity of the situation, as Jin's tone softened slightly. 

"Let's plan to meet again after summer break," he suggested with a supportive smile to ease the tension. He looked around at the others, who appeared wide-eyed and confused by the sudden turn of events. 

Shinji, standing beside Sei and Takeru, had closely observed the unfolding drama. He realized they had been in a fierce battle as teammates but hadn't expected it to escalate to this seriousness. This revelation left him reflecting on the unexpected dynamics of their camaraderie and the weight of their circumstances.

Everyone remained silent, nodding as they watched the three of them along with Sei, who had fainted in Kenya's arms. The trio reached the training ground's exit, and Kenjuro spoke up. 

"If we had known this would happen, we shouldn't have come to this academy," he said, glancing at Sei, who was asleep in Kenya's embrace.

"Nobody can predict the future!" Jin shot back, but Kenya interjected. 

"Mom already warned us about what would happen while we were at the academy," he said, his voice firm but only audible to them.

"Ahh! That's... I believe everything will be fine!" Jin felt guilty as he was the one most eager to study here among the four of them.

Kenya expressed his concerns, saying, "I can't imagine how our fathers will react to the chaos surrounding Sei!" The others nodded in agreement, clearly sharing his anxiety. He then added,

"It's particularly troubling with those Ishikawa guys!" At that moment, Jin and Kenjuro froze, unsure how to respond. They exchanged awkward chuckles, silently questioning each other, 'Is it okay to feel this way?'

"We're his sons too," Kenjuro said, looking confused at Jin and Kenya.

"Wait! It seems our fathers prefer their only daughter over us!" Kenya replied.

"But we have mom!" Kenjuro insisted, turning to Jin. "Right?"

"Mom may be one, but she's a boss!" Jin said, causing both Kenya and Kenjuro to laugh as they walked to their dorm, unaware that someone was watching them.

''They're The Quadruplets who we need to kill, right?''