Honkai Star: Rail x Reader Oneshots

"You're Everything" | Aventurine x Reader

Summary: Aventurine has always been able to read people, but the one person he can't quite figure out is you, his partner. Though outwardly cheerful, you've been hiding insecurities beneath your bright demeanor. One evening, during a quiet moment at home, your walls finally come down as you confess your self-doubt, feeling unworthy of Aventurine’s affection. This revelation shatters the illusion that everything is fine, and Aventurine takes the opportunity to reassure you of your worth.

Tags: Aventurine x Reader, Romance, Emotional Support, Insecurity, Reassurance, Vulnerability, Tender Moments, Established Relationship, Confessions, Trust.

Warnings: Mild emotional distress, Insecurity/confidence issues, Mild mentions of self-doubt.

Aventurine had always been able to read people, to sense when something wasn’t quite right, when the masks people wore didn’t match the truth lurking beneath. But there was something about you—about how you always wore that giddy, almost dizzying smile—that kept him second-guessing himself. You never seemed to show your hand, always too busy hiding your true feelings behind that infectious energy.

It had taken time, but over the months of your relationship, he’d come to know you better, catching the subtle hints when your laughter wasn’t quite as bright or your movements just a little too stiff. He’d be lying if he said he didn’t worry—his strategic mind always assumed something was amiss, but you had become his anchor. He’d convinced himself that he didn’t need to dig deeper, that everything was fine as long as you looked happy. But deep down, that little seed of doubt always lingered, nestled in the back of his mind.

And that day... that day it all came crashing down.

It started with a quiet evening at home. The two of you had shared a meal, laughed about something trivial, and as always, you had worn that bubbly, almost too-exuberant smile. But there was a shift, a subtle drop in the energy that only someone who had spent so much time with you would notice. The tension in your shoulders, the way your eyes darted away when he met your gaze—it was like a veil had dropped, leaving a raw vulnerability behind.

You didn’t say anything at first, as if waiting for him to notice, to say something. But then, just as he was about to speak, you broke the silence.

"I don't think I'm good enough for you." you muttered, voice strained. Your hands trembled slightly, though you tried to keep them hidden in your lap.

Aventurine’s heart twisted. The moment you said those words, the mask shattered, and the heavy truth hit him. You hadn’t been your usual self—hadn't been genuinely happy—and he knew it was time to uncover the secret you’d been holding in.

He leaned forward, resting his elbows on his knees, studying you carefully. “What do you mean by that?” His tone was soft, but there was a depth of concern behind it.

You swallowed, trying to compose yourself, but the words kept slipping out in a rush. "I—I don’t know, I just feel... like you could do so much better. I see how you are at the casino, surrounded by all those beautiful, confident women, and I... I can’t compete with them. I don’t even feel like I’m enough for you. You can... break up with me anytime you want. I wouldn't blame you."

The words hit Aventurine like a sucker punch. He froze for a moment, his usually steady hand twitching as he fought the urge to reach out and pull you into his arms. But instead, he stayed where he was, keeping his distance, allowing the weight of your words to settle between the two of you.

His gaze softened, his eyes fixing on you with an intensity that left no room for doubt. “You think I’m with you because of how you compare to others?” he asked, his voice a little more stern than usual. But underneath it was something deeper—something fragile, as if he was trying to keep his own composure intact.

Your head hung low, and you nodded, unable to meet his eyes. “I don’t know… It just feels like... I’m not enough for someone like you. You deserve someone who can make you happy without all this baggage."

Aventurine let out a small sigh, shaking his head slightly, as if processing the sheer weight of your words. His lips twitched upward into a soft, bittersweet smile, the kind that spoke of knowing something far deeper than surface-level impressions. He stood and walked over to you slowly, his movements calculated, but not with the usual sharpness of someone managing a deal. No, this was different. His steps were careful, as if afraid of shattering the delicate balance between the two of you.

Reaching out, he cupped your chin gently with one hand, lifting your face so you would meet his gaze. "You really think I care about comparing you to other people?" His voice, though steady, held a quiet intensity that resonated through you. "Look at me. Look at me, and understand something."

You blinked up at him, your heart thundering in your chest.

Aventurine exhaled a breath he hadn’t realized he was holding. “What matters to me, what’s always mattered to me, is you. Not the ‘pretty ladies,’ not the ones who look perfect on the outside. I’ve never cared about that. Not when it’s you who can make me laugh when the world feels like it’s closing in. Not when it’s you who makes me feel... human, not just the strategist, not just the Stoneheart. I don’t need anyone else."

You felt a pang in your chest at his words, but it only deepened when he continued.

“You think you're not enough, but you're everything. The fact that you’re here, sharing this with me, means more than you can imagine. You want to know why I chose you?” His voice was softer now, coaxing, as if breaking through a dam that had held so much back. "Because you're you. You don't have to pretend to be someone you're not. You never have to compete with anyone else, not when I’ve already chosen you."

Tears welled in your eyes, but you didn’t wipe them away. His words felt like a balm to wounds you hadn't realized were so deep.

Aventurine gave you a small, sincere smile, his gaze unwavering. “I’m not going anywhere. And if you ever doubt it again, I’ll remind you. But I’m asking you now, don’t doubt yourself. Not for a second. You’re exactly what I need, exactly what I want.”

The weight that had been crushing your chest seemed to lift, and for the first time in a long while, you breathed a little easier. You couldn’t help but let out a shaky laugh, your lips curving upward despite the wetness still on your cheeks.

Aventurine laughed with you, the sound warm and full of tenderness. “There’s that smile again. I’m never letting go of it.” He wiped a stray tear from your cheek with his thumb, his eyes glimmering with something you couldn’t quite put into words.

In that moment, you understood. You weren’t just his partner. You were his, completely and irrevocably, no matter what the world outside thought or how you felt inside.

And with that, you finally let the real smile break free, one that didn’t feel forced, one that was only for him.