Welcome! As the name suggests, this is where I'll be sharing my Honkai Star: Rail x Reader work from my Tumblr (aventurineswife).
I'd love to hear your requests, so feel free to send them in! I hope you enjoy reading!
Warnings: Most of my fics are...
Summary: You are in a relationship with Aventurine and Ratio, but you began to feel like an afterthought as your partners' interest in each other overshadows your bond. One night, seeking solace and a brief escape from your lonely frustrations, you meet two enigmatic strangers at a bar-Argenti and Boothill. Both quickly become captivated by you, their admiration bordering on obsession. You find yourself ensnared in a dangerous game of affection and desire, with each group willing to do whatever it takes to win your undivided attention. The question is; Who are you going to be choosing?
Tags: Aventurine x Reader x Ratio, Argenti x Reader x Boothill, Polyamory, Not really a love triangle since you pulled 4 men/Love pentagon, Jealousy & Possessiveness, Yandere Themes, Slow Burn Romance, Angst, Hurt/Comfort, Pining, Longing, Light Drunkenness, Obsessive Behaviour, Emotional Tension, Emotional Angst, Slight Cheating Behaviour.
Warnings: Possessive and Obsessive Behaviour, Light Alcohol Use, Yandere Themes, Emotional Distress, Do not try this at home or think this is cute and all. This is fictional.
A/N: THIS IS MY FIRST TIME WRITING FOR LIKE POLYAMORY RELATIONSHIP (SO DON'T COME AFTER ME IF I DID SOMETHING WRONG!!) AND YANDERE SOMETHING! 😪 I personally don't ship anyone in HSR but for the sake of this fic, they're being shipped.
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In the dim glow of a hazy bar, the soft clinking of glasses and murmurs filled the air as you downed your third drink. The evening had started with only a desire to escape the gnawing ache that Aventurine and Ratio had unwittingly left in your heart. For so long, you had been the third in your relationship, watching the connection between them bloom far more intensely than their affection for you. It was hard to pinpoint when exactly you began to feel this way, but tonight, the loneliness finally hit.
You sighed, stirring your drink absentmindedly, lost in thought until a warm voice cut through the fog of your mind.
“Are you alright?” Looking up, you were met with the striking gaze of a man with fiery red hair and green eyes that sparkled with curiosity and concern.
“Y-yeah, I’m fine...” you muttered, masking your sadness with a weak smile. But even before the words left your mouth, you knew they were unconvincing.
“Ah, doesn’t look like it to me.” drawled another voice from beside you. Turning, you found yourself facing a man who looked like he walked straight out of a rugged holo-western. He had a silver gleam in his eye and a smirk that promised trouble, yet there was something comforting in his casual demeanor.
They introduced themselves—Argenti, the knightly-looking redhead, and Boothill, the roguish gunslinger. They struck an odd pair, yet somehow, they both seemed genuinely concerned. That genuine concern, however small, was enough to tug open the lock on the emotions you’d been bottling up.
“I just feel like… no matter how much I try, I’m always a shadow between them,” you confessed, the alcohol loosening your words. “It’s like I’m just… there. I know they love me, but sometimes, it feels like they’re happier with each other.”
Argenti’s gaze softened as he leaned closer, his voice rich and sincere. “A soul like yours deserves to be cherished, never neglected,” he said, his tone filled with a quiet reverence. “I see a light in you, something so rare and beautiful. Anyone who fails to treasure it is unworthy of your heart.”
Boothill leaned in with a sly grin, his eyes flickering with something darker. “If they can’t see what they have, then maybe you’re wastin’ your time on ‘em.”
The warmth of their words and the way they leaned closer, as if drawn to you, sent a flutter through your heart. It had been so long since anyone looked at you like that—with full, unbridled interest.
His hand moved gently to the small of your back, his touch radiating warmth. “Allow us to show you what it means to be honored—to be loved without restraint.”
His words lingered in the air, weighted with a knightly promise. You felt your pulse quicken at his sincerity, yet even through the comfort of his presence, something held you back.
The heat in his touch and Boothill’s gaze made your heart pound faster, and for a dizzying moment, you felt tempted. But, catching yourself, you pulled back, gathering the scraps of your resolve. “I… I can’t. Not like this,” you stammered, stumbling up from the table. “Thanks, but… I need some air.”
You barely noticed their longing stares as you left, desperate to clear your mind, unaware of the yearning spark you had ignited in both men.
Days passed, and you tried to shake off that night. But a strange unease began settling over you. Everywhere you went, you could feel eyes on you. Argenti’s soft, almost reverent gaze in places he couldn’t possibly be; Boothill’s devilish grin, catching you in your peripheral vision even when he wasn’t there. As if they were everywhere, waiting.
The more you found yourself in their orbit, the more their obsession seemed to grow. Argenti, once chivalrous, was now desperate for every glance, every smile you gave. Boothill, once a lighthearted scoundrel, grew possessive, his words laced with dark promises of keeping you safe… from anyone who dared come between you.
Your time with Aventurine and Ratio was no longer as comforting as it once was, either. They sensed the shift in you. Aventurine’s charming smile had faded into something sharp, his eyes assessing as he caught sight of Argenti and Boothill’s names in your messages. Ratio’s typical aloofness twisted into jealousy, his usual intellectual grace tempered by a fiercer intensity.
One evening, as you arrived home, you found Aventurine and Ratio waiting. Ratio was seated calmly, but his piercing gaze was anything but passive. Aventurine leaned casually against the wall, his fingers twitching as if he longed to reach out to you—or hold onto you, tightly.
“We’ve been worried.” Aventurine said with a soft smile that didn’t reach his eyes.
Ratio inclined his head slightly, his eyes narrowing. “Tell me, have you… made some new friends?”
The question caught you off guard, and you stammered out a response. But their knowing expressions only confirmed the suspicion that had been growing in both of them.
That night, they wouldn’t let you go. Aventurine’s once-teasing nature had turned possessive, his charming smile a mask for the tension simmering beneath. Ratio was no different, wrapping his arm around you, his touch firmer than usual, as if reminding you that you belonged to them. They held you close, more than ever before, but their embrace now felt like a cage, one you couldn’t escape.
And just as you thought you had nowhere to turn, there came a knock on the door. The sound was calm, persistent, carrying a strange sense of finality.
You didn’t need to open it to know who it was. The question that burned in your mind wasn’t if it was Argenti and Boothill waiting outside. It was what they would do now that they had come for you. And with Aventurine and Ratio on the other side, waiting to stake their claim, you realized you were caught in a game where escape might be impossible.
The question was: who would be the first to make their move?
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