Honkai Star: Rail x Reader Oneshots

The Price of Loyalty | Sampo, Aventurine x Reader

Tags: Aventurine x Reader, Sampo x Reader, Dog-Human hybrid!Reader, Fluff, Domestic Fluff, Playful Interaction, Humor, Emotional Depth, Found Family, Gentle Themes, Teasing and Banter, Companion Bond.

Warnings: Light manipulation, Minor suggestive language, Emotional depth (brief glimpses into Sampo and Aventurine’s vulnerabilities), Mentions of past trauma, Mentions of self-serving tendencies.

Sampo Koski

It had been a long day filled with the usual mischief and deals, but tonight was different. Sampo had returned to his quarters, exhausted but still smiling that signature grin of his. His place was cozy, if not a little cluttered with trinkets and oddities collected from both the Overworld and the Underworld. You, his dog-human hybrid companion, greeted him at the door with an enthusiastic tail wag and a playful bark.

Sampo laughed softly, ruffling your hair as you jumped excitedly. "Well, well, if it isn’t my favorite little troublemaker," he teased, his voice smooth and full of affection. "You’ve been a good one today, haven’t you?"

You barked in response, spinning in a circle as he set his jacket down. There was a familiar jingle as your squeaky toy caught his eye, lying on the floor just beside your small cage—your space, your sanctuary. Sampo had always made sure you had a place to call your own, even though you often preferred to curl up at his feet while he worked.

He flopped onto the couch with a sigh, watching you eagerly as you brought the squeaky toy to him, offering it up like a gift. Sampo smirked, taking the toy and giving it a small squeeze. The squeaking noise filled the room, causing you to jump and bark with delight.

"You always know how to make a man smile, don't you?" he said, his tone light, but there was a subtle warmth behind it.

Despite your playful nature, you could tell Sampo’s mind was still buzzing with his latest dealings. He often hid his true feelings, but you knew him well enough by now to sense when he was burdened by something. You gave him a gentle nudge with your head, your eyes full of concern.

Sampo chuckled softly and leaned back against the couch, resting his hand on your head. "Don’t worry about me, little one. I’m always one step ahead," he reassured, though you didn’t quite buy it.

Later that evening, he threw a blanket over the two of you, as you curled up next to him. Your cage remained open, but it was clear you preferred this quiet moment, lying beside him. Sampo smirked, his usual sly grin softened by the comfort of your company. "You know, sometimes I think you’re the one keeping me grounded," he murmured, though his words were almost too quiet to hear over the sound of your contented breathing.

Aventurine

Aventurine was not the type to show weakness, but there was something about you—a human-dog hybrid—that brought out a gentler side of him. His evening began as it always did, with a reflection on his strategic decisions and the game he was playing with the universe. However, tonight was different. He had a rare quiet moment to himself, with you curled up at his feet as he relaxed on his chaise lounge, the flickering of candlelight casting long shadows in the room.

You had a way of making the atmosphere feel less tense, your presence offering a comfort he hadn’t realized he needed. Every now and then, you’d let out a small whimper, nudging his hand with your snout. Aventurine smirked, adjusting his blazer, before leaning down to pet you, fingers running through your fur with practiced care. "A little restless tonight, are we?" he mused.

You responded with a soft whine, your tail wagging slightly as you brought a squeaky toy to his feet. Aventurine raised an eyebrow, intrigued but not particularly surprised by your antics. "I suppose you’re in the mood for some amusement, then," he chuckled, the glint in his eyes never faltering.

As he squeezed the toy, the squeak echoed through the room, and you immediately pounced, trying to catch it with the speed of a predator, your eyes glowing with playful determination. His soft laughter was a rare sound—something that came not from manipulation or strategic amusement but genuine enjoyment. "Such energy," he remarked, shaking his head with a smile that never reached his eyes. "You’re a handful, you know that?"

Later, as the evening deepened, Aventurine reclined on his chair, hands behind his head. You, having tired yourself out from your playful antics, curled up at his feet, letting out a soft sigh as you made yourself comfortable. He glanced down at you, his expression shifting slightly.

"Sometimes I forget how simple life can be," he muttered, almost to himself. His fingers brushed against the delicate band of his wrist, his thoughts drifting before returning to you, curled so contentedly by his side. "You always know how to make the chaos of the world feel far less… chaotic."

Aventurine stretched, standing up to gaze out the window for a moment, and when he turned back, his gaze softened, the ruthless strategist giving way to something gentler, a hint of fondness in his eyes. "Don’t get too comfortable," he added, his tone laced with teasing, "but I suppose I’ll allow you this one night of peace."

The night passed quietly, with you curled up by his feet, and Aventurine content in the subtle companionship you offered. For once, the world outside seemed far less important, and the games of life seemed a little easier to bear with your presence.