Acheron in Tensura

Acheron stood still in the grand hall of the mansion-like castle, her purple eyes scanning the demoness before her with cold precision. Across from her stood Blanc, a being whose white hair framed her sharp crimson eyes that were filled with mischief and malice. She tilted her head, smirking, her confidence almost tangible.

Blanc's smirk widened as she stepped forward, her aura pulsating with controlled chaos.

"Well, Acheron, was it? Shall we dance?" she purred, her voice laced with mockery.

As the floor trembled faintly beneath her, she relished the thought of overwhelming her opponent, imagining Acheron breaking beneath her power. 'She doesn't look like much. Calm, composed... I'll shatter that facade soon enough.'

Acheron said nothing, her expression unreadable. Instead, she moved with deliberate slowness, reaching for her blade and unsheathing only the scabbard. The hilt of the weapon gleamed faintly, but the blade itself remained dormant within.

Her calm purple eyes seemed to pierce through Blanc, measuring her not by her outward display of power, but by the flaws beneath it.

Blanc raised an eyebrow, confusion flickering across her face before her smirk returned.

"Fufufu. You're not even going to draw your blade? How insulting," she laughed, though her voice was edged with irritation.

'She's mocking me? Me! Does she think she's too good to use her weapon? I'll make her regret that arrogance.'

Her laughter faltered the moment Acheron's aura shifted. The oppressive weight of it descended upon her like a tidal wave, the sheer force crushing the air from her lungs.

'What… what is this?! It's not magic... it's her presence. How can someone exude such power without lifting a finger?'

"Demon Lord's Haki... No something stronger." Blanc whispered under her breath, a bead of sweat trailing down her temple. Her crimson eyes narrowed as she steadied herself, anger and disbelief warring in her chest.

'This... this is fine. She's trying to intimidate me. I've faced worse.'

Acheron's measured steps echoed through the hall as she advanced, unhurried, her scabbard resting lightly in her hand.

Her thoughts were steady, deliberate. 'She hides her fear behind bravado. Overconfidence will be her downfall.'

Snarling, Blanc extended her hand, summoning several dark spears. The air crackled with energy as the constructs formed, their jagged tips aimed directly at Acheron.

'Let's see how calm you are after this. You won't just stand there and take it, will you?'

Acheron moved with almost casual grace, flicking her scabbard to deflect each incoming spear. The sharp clang of energy dissipating into nothingness echoed with each strike.

Acheron's eyes were still glued on Blanc. 'Predictable. She relies on raw force.'

Blanc's eyes widened, her confidence wavering.

"What?" she blurted, disbelief clear in her voice.

'No one counters my magic so effortlessly! What kind of monster is she?'

"You'll need more than that," Acheron replied, her voice calm, almost detached.

Blanc's shock turned to anger, her aura flaring violently.

"Fine, let's see how you handle this!" she roared, unleashing a torrent of dark magic.

The energy spiraled outward, warping the air as her nuclear magic merged with elemental chaos. The sheer force tore through the room, sending shards of marble flying.

'I'll crush her beneath this. Let's see that composure break now!'

Acheron raised her free hand, her expression unchanged. The storm of magic collided with her, only to dissolve into harmless wisps before reaching her. The energy bent and broke around her, dissipating into nothing.

Blanc's jaw clenched, her fury rising.

'Impossible. She's toying with me—no, she's negating me entirely. How?!'

Acheron advanced with slow, deliberate steps, her gaze unflinching.

'She expends too much energy for too little in return.'

Blanc screamed in frustration, her voice echoing through the grand hall. Her body contorted as she summoned devastating weapon—the Freezing White Flame.

The ghostly fire surged toward Acheron, freezing and incinerating everything in its path.

"Burn. Freeze. Die! Let's see you walk through this!"

The marble floor cracked under the immense pressure of the flame, but Acheron moved like a blur. She met the flames head-on, her scabbard cutting through them in a single, precise motion.

The inferno dispersed into harmless embers. Before Blanc could process what had happened, Acheron was in front of her.

Her scabbard swung in a sharp arc, striking Blanc squarely in the midsection. The impact sent her crashing into the far wall, the stone shattering under the force.

Blanc gasped, clutching her ribs as she struggled to stand.

"You rely too much on your magic," Acheron said, her tone cold yet measured.

Blanc's crimson eyes burned with rage as she forced herself upright, her body glowing with a blood-red hue.

"I'll make you regret this arrogance!" She screamed.

Her form blurred as she surged forward, her attacks relentless. But no matter how fast she moved or how powerful her strikes, Acheron countered with ease.

A precise strike to her wrist disarmed Blanc's whip of flame; a sharp sweep of the scabbard brought her crashing to the ground.

Blanc's thoughts raced, panic creeping in.

'She's not just stronger... she's smarter. Every move I make, she's already predicted. Am I... truly powerless against her?'

Blanc gritted her teeth, her movements growing frantic. She shifted tactics, lowering her aura and softening her expression.

A playful smile spread across her lips as she let out a soft, honeyed laugh.

"You're strong, I'll give you that," she purred, leaning closer with a calculated sway.

'If I can't beat her with power, I'll seduce her. Everyone has a weakness. She'll see reason...'

Finally, Blanc tried a different tactic. She lowered her aura and let a playful smile spread across her face. "But surely someone as powerful as you needs a companion. Wouldn't it be fun to keep me around? We could… enjoy ourselves." Her tone became more seductive, her body language alluring as she leaned toward Acheron.

"No."

---

In a grand cathedral bathed in moonlight, Luminous Valentine sat on her throne, her elegant features twisted with rage. Her eyes burned with jealousy as she watched Blanc's desperate attempts to seduce Acheron.

"How dare she?" Luminous hissed, her voice echoing through the chamber. She gripped the arms of her throne so tightly that the ornate carvings began to crack. "That wretched demoness dares to throw herself at my Acheron?"

Gunther, ever the loyal servant, approached cautiously. "Luminous-sama, please calm yourself. Surely, Acheron would never be swayed by such a lowly creature."

Luminous turned her fiery gaze toward him. "Calm myself? Did you see how that... that harlot dared to flaunt herself? She even tried to seduce her!" She stood abruptly, pacing the room with unrestrained fury. "Acheron didn't even look annoyed. She just... ignored it!"

Gunther adjusted his glasses nervously. "Perhaps Acheron's indifference is proof of her loyalty to you, my lady."

Luminous froze, considering his words for a moment. Then her face darkened further. "Or perhaps she's so unbothered because she doesn't care at all! What if she becomes immune to my charms too?"

Gunther swallowed hard. "Luminous-sama, I—"

"Silence!" she snapped, her voice reverberating like a thunderclap. "I need to make sure that demoness never gets near her again. I'll... I'll place a barrier around that demon! No, I'll summon her here! And I—"

Gunther attempted to speak again, but Luminous's icy glare silenced him. Realizing there was no soothing her, he simply bowed his head and stepped back into the shadows, choosing to remain silent.

---

Back in the castle, Acheron's face remained unmoved. Her stoic expression didn't waver as she met Blanc's gaze.

Blanc froze, her seductive facade shattering. The single word carried more damage then the fight.

Blanc's smile faltered, turning into a scowl. "You'll regret turning me down."

Without hesitation, Acheron raised her scabbard. Two swift strikes tore through the air, opening a rift behind Blanc. The swirling void, its pull undeniable.

Acheron's voice was calm, final.

"Return to where you belong."

Blanc's crimson eyes widened as the portal consumed her. Her screams of frustration echoed briefly before the rift closed, leaving the hall in silence once more.

(End of Chapter)