In one of the karaoke rooms, Miku and Yotsuba sat side by side, their expressions vacant and unfocused.
"Hey, Yotsuba, don't you think that clerk earlier was kind of... charming?"
"E-Eh!? You really think so!?"
Yotsuba flinched at the sudden question, her shoulder jolting. The two sisters sat on the L-shaped sofa, their nearly identical beautiful faces turned toward one another.
"Yeah, I thought he was really cool," Miku affirmed softly.
"Well... I guess he did seem kind of handsome," Yotsuba muttered, hesitant but unable to deny it.
"Right? That gangster-like aura he's emanating. So dashing, don't you think?"
"Huh? Aura? I-I don't know about that..."
Despite his harsh eyes, Yotsuba couldn't stop thinking about the man.
His lustful gaze had been intense, almost predatory, but there was something undeniably captivating in his demeanor that stirred feelings she didn't understand.
'No, no! Stop it, Yotsuba! You already told everyone you love Futarou. You can't just look at other guys like this!' She shook her head vigorously, trying to reset her thoughts.
Yotsuba reminded herself that she was already guilty enough for confessing her feelings to Futarou and becoming his girlfriend, leaving her sisters' hearts in disarray. She had no right to be attracted to a karaoke clerk, of all people.
'And what's with Miku? She still loves Futarou, doesn't she? Why is she acting so strange?'
Yotsuba's confusion deepened as she studied her sister's dreamy expression.
Miku, who had been the first to fall for Futarou, now seemed utterly infatuated with someone else.
But Yotsuba wasn't wrong to feel suspicious. Both their hearts had been tampered with—altered just moments ago by the mysterious and sinister "Devil's App."
"Excuse me~! Here's your order of French fries!"
The door creaked open without a knock, and the clerk in question stepped into the room, holding a tray.
"Wait, we didn't ord—"
—Thump… Thump.
Yotsuba's heart skipped a beat, her words catching in her throat. A sudden rush of emotions flooded her chest, overwhelming her senses. Just seeing the man's face filled her with a chaotic mix of feelings—alarm, disdain, and inexplicable excitement.
"Ah..."
"Wow... he's even cooler up close..." Miku murmured, her voice tinged with admiration.
"Huh..." Yotsuba turned toward Miku and froze.
Her sister's usual calm demeanor had melted away, replaced by a flushed face and an alluringly soft expression. Her cheeks glowed pink, her gaze fixed on the clerk with a longing that left no room for doubt.
'No, no, no! This is crazy! She was in love with Futarou-san! Why is she acting like this!?'
While Yotsuba reeled in confusion, the man approached, casually picking up a glass from the table.
'Ahhh!! Wait, that's my drink!'
Realizing it was the juice she had been sipping earlier, Yotsuba felt a strange wave of shame and exhilaration as he took a sip.
'An indirect k-kiss...!'
Yotsuba's thoughts spiraled further. She had kissed Futarou before, but this—this felt entirely different. Her body buzzed with a raw energy she couldn't suppress, spreading from her chest to her core, leaving her breathless.
'What is this feeling...?'
The man's sly grin broke her train of thought, sending another jolt of heat coursing through her body.
'He's looking at me... smiling at me!'
Her emotions warred within her:
Disgusting.
Thrilling.
Run away!
Come closer.
Leave me alone!
Look at me more!
God, help me!
Thank you, God!
"A-Ah... could you, um, tell me your name...?" Miku's voice broke through, low and sultry, laced with uncharacteristic seduction.
"My name is Kamina Kenta," he replied smoothly.
"Kamina-san..."
"Hey hey, I get embarrassed when you call me with that cute voice." he teased with a smirk.
Kamina laughed internally as he plopped down on the sofa with casual ease, settling into the corner seat between Miku and Yotsuba.
His demeanor was anything but professional, yet neither of them protested. Instead, both found themselves oddly elated by his proximity, a realization that sent a mix of confusion and dread rippling through their minds.
Miku, too, seemed to falter under his charismatic presence. Her lips parted slightly, and her gaze flickered to his face with a nervous yet unmistakable intensity.
The faint blush on her cheeks deepened her expression one of timid yearning.
'What are we doing!? This is so wrong, so ridiculous...!' Yotsuba's thoughts screamed, her inner voice desperately trying to regain control. But her body betrayed her.
A peculiar sensation coursed through her—a strange compulsion to submit to the man's presence, as if disobedience would deprive her of an indescribable bliss.
"Come on, don't be shy," Kamina said smoothly, his grin widening as his arm casually stretched across the back of the sofa.
"You can snuggle up to me if you want. I don't mind giving special treatment to two cuties like you."
His hand reached out, fingertips brushing Yotsuba's cheek. The contact was electric, sending a sharp jolt through her body that left her trembling. Her mind blanked, overwhelmed by a wave of dizzying pleasure that swept away her rationality.
"Ahh...!" she gasped, instinctively pulling away, though her trembling frame betrayed her hesitation.
Kamina chuckled, his grin turning predatory. There was something inherently vile about his expression, yet the disgust Yotsuba expected to feel was nowhere to be found. Instead, a strange warmth blossomed in her chest—a twisted sense of joy at being the focus of his attention.
"What's the matter? Still resisting? I could've sworn I wrote it in that you'd start drooling the moment you saw me. Maybe I should've erased that guy's name more thoroughly..."
"Wh-what are you talking about...?" Yotsuba stammered, her head spinning.
She didn't understand his cryptic words, yet they filled her with an ominous foreboding. Her thoughts felt sluggish, unable to form coherent responses, leaving her in a haze of confusion.
"...Kamina-san..." Miku's voice, soft and drenched in longing, broke the spell.
Yotsuba turned to see her sister edging closer to Kamina, her movements slow and deliberate, like a moth drawn to a flame. Miku's eyes shimmered with a sultry light, her lips curving into a shy yet suggestive smile.
"That's right. Come closer," Kamina coaxed, his voice low and inviting.
"Yes..." Miku whispered, closing the gap between them.
Finally, she nestled against his side, her head resting on his shoulder as though it were the most natural thing in the world.
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