Awakening: My Yandere sister is obsessed with me

Haruto remembered, too, a peculiar intensity in his sister's gaze when she looked at him, a possessiveness that bordered on something more profound than sibling affection. He recalled fleeting moments, hushed conversations he'd overheard, whispers of a future intertwined, a promise of a bond unbreakable.

He even vaguely remembered his sister, with a surprising earnestness that belied her usual playful demeanor, suggesting a future where their families would be joined, a notion of engagement. It was a child's fanciful thought, perhaps, but the memory carried a surprising weight.

Then came Yuki, with her quiet strength and an unspoken authority that seemed to ripple around her. She had intervened, a firm but gentle hand guiding his sister away from such an idea. The reason for her intervention remained a mystery to him, a silent question mark hanging over his past. He hadn't pressed for an explanation then, and the moment had faded into the background, overshadowed by the events that followed.

And then, the separation. A sudden, jarring uprooting. He and Onee-chan had moved away, to a new town, a new life, leaving behind the familiar faces and cherished memories of their childhood. The distance had stretched, turning shared laughter into faint echoes, and close friendships into distant memories. He had always wondered, in the quiet moments, what had become of Yuki, of the lively girl who could turn a mundane afternoon into an epic adventure.

Now, here she was. Battered, bruised, and bleeding, yet undeniably herself.

Haruto's voice, usually calm and measured, held an edge of urgency as he finished cleaning her cut. "Yuki, what in the world happened? Why are you here?"

Yuki flinched, her eyes darting away as if seeking an escape from his gaze. A storm of emotions raged within her: fear, exhaustion, and a deep-seated apprehension. He saw it, the flickering doubt, the heavy burden she carried.

He knew, with an instinct honed by years of navigating the underbelly of society, that her story wasn't simple. It wasn't just a stray cat she'd been trying to rescue, nor a clumsy accident. There was something far darker, far more dangerous at play.

He waited, patiently, his hand still gently cupping her chin. The silence stretched, punctuated only by the distant city hum and the ragged sound of her breathing. He could almost feel her internal struggle, the weighing of risks, the desperate need to confide.

Finally, with a tremor in her voice that was barely audible, she began. "My father… he's the boss of the Red Serpent gang."

Haruto's eyes flickered with the hint of recognition. The Black Serpent—a name that sent chills through the underworld. A syndicate feared for its brutality, its influence coiled tight around the city's darkest corners. He'd heard the whispers, of course. But never had he imagined those shadows would touch her—Yuki. The girl he once knew. The girl who seemed untouched by the darkness.

She continued, her words tumbling out in a rush, as if the dam had finally broken. "But recently… he lost his footing. His power began to wane. Others, the hyenas, they saw their chance. They moved in, circling, waiting for the opportune moment. And then… they made their move. There was a coup." Her voice cracked, and a fresh wave of tears welled in her eyes.

"My father was overthrown. I don't know if he's alive or dead. All I know is that the new boss… he wants to eradicate my entire family. Every single one of us. And that includes me."

Her confession hung heavy in the air, a stark contrast to the quiet of his apartment. The whimsical anime aesthetic of their reunion had shattered, replaced by the harsh reality of her nightmare.

"I've been running," she whispered, her gaze distant, lost in the horrors she had endured. "Running, hiding, trying to stay one step ahead. I don't know how long I can keep this up. I just… I ended up here, by chance. I didn't know where else to go."

She looked at him then, her amethyst eyes, despite their weariness and pain, holding a fragile spark of hope. A hope that, despite the years and the dark paths their lives had taken, he might still be the Haruto she remembered, the one who would protect her, just as he had in their innocent childhood games. The unspoken plea in her gaze was clear, a silent cry for help that transcended the years and the impossible circumstances.

Haruto's mind raced. The Black Serpent. A power vacuum. A girl on the run, hunted by ruthless criminals. And the ghost of his own past, intertwined with hers. He knew, with a certainty that resonated deep within him, that he couldn't turn her away. Not Yuki. Not his childhood friend, the one whose memories, though fragmented, still held a profound significance for him.

He looked at her, then, a resolve hardening in his eyes. The playful boy from his memories was gone, replaced by a man who understood the brutal realities of the world. "You're safe here, Yuki," he said, his voice firm, unwavering. "For now."

But as he spoke, a new question began to form in his mind, one that brought a cold knot to his stomach. The Red Serpent. His sister. Satsuki. There were too many coincidences, too many threads that seemed to intertwine in a dangerous tapestry.

He had a chilling premonition that Yuki's arrival wasn't just a random twist of fate, but a signal that the mysteries of his own past were about to collide, violently, with his present. And he knew, deep down, that his onee-chan, wherever she was, was somehow connected to all of it.

"You're safe here, Yuki. For now."

The words had barely left Haruto's lips when the last vestiges of Yuki's strength gave way. Her eyes fluttered, then rolled back, and with a soft sigh, she crumpled forward, her unconscious form slumping into his arms. The sudden weight, though slight, felt monumental, a testament to the immense strain she'd been under.