Honkai Star: Rail x Reader Oneshots

Detective on the clock! | Aventurine, Boothill, Ratio x Detective!Reader

Tags: Aventurine x Reader, Boothill x Reader, Ratio x Reader, Detective!Reader, Crime-solving, Witty Banter, Partnership, Mystery, Tension, Fluff, Adventure.

Warnings: Mild Language, Implied Violence, Mentions Of Crime And Investigation, Action, Slight Angst In Boothill's Storyline.

Aventurine

The soft chime of the clock struck midnight as you studied the crime scene evidence, furrowing your brow in concentration. Just as the details started to piece together, a figure slid into the room, his eyes glinting with curiosity.

“Late night again, love?” Aventurine’s smooth voice broke the silence, accompanied by the gentle scent of his cologne as he leaned against your desk, one eyebrow arched in amusement.

“Some people work for a living,” you replied, sparing him a quick, affectionate smile. “Unlike a certain risk-taker who plays the stock market as if it’s a card game.”

Aventurine chuckled, feigning an offended gasp. “Why, I’ll have you know that every investment is as strategic as a chess move. And speaking of strategy…” He slid a small, folded paper across your desk. “I managed to get some information that might help with that case of yours. A little gift, courtesy of the IPC.”

You took the paper, heart thumping as the details unfolded. It was a lead you’d been searching for. “Aventurine… how did you even get this?”

“Do you really want to know?” He grinned, pushing his glasses up. “Or are you happy with the result?”

You leaned over, placing a gentle kiss on his cheek. “Sometimes, I think you’re the better detective.”

“Maybe,” he mused with a wink. “But I’d rather leave the real mysteries in your capable hands.”

Together, you returned to your work—one a master of risks, the other a seeker of truth, blending your strengths to bring the shadows into the light.

Boothill

The galaxy's starry expanse flickered beyond the viewport as Boothill silently reloaded his revolver, checking each chamber with practiced ease. You leaned back, arms folded, watching his every move.

“Any idea what’s waiting for us down there?” you asked, squinting at the worn map on the dashboard. The old freighter rumbled beneath you, navigating its way through treacherous asteroid fields toward the IPC's latest outpost.

Boothill's sharp teeth flashed in a grin. “Justice, sweetheart. That’s all that’s waiting. And maybe a little trouble, if I’m lucky.”

You rolled your eyes but felt your lips twitch into a smile. “Lucky, huh? You mean reckless.”

“That, too,” he drawled, glancing over his shoulder at you. “That’s why I have you, my little detective. Keepin’ me on the straight and narrow.” His eyes gleamed with affection. “Mostly.”

“Someone has to,” you said, crossing the room to stand beside him. “I may not have your… firepower, but I’d like to think my detective instincts are keeping us both alive.”

He reached out, brushing his thumb along your cheek. “Those instincts of yours are sharper than any blade. Once we hit that outpost, keep your eyes open. They’ll have what we need, but I’ll need you watching my back.”

And with a quick, heated kiss, you both turned back to the task at hand—a vengeful cowboy and his vigilant detective, prepared to bring justice to every shadowed corner of the galaxy.

Dr. Veritas Ratio

The night was quiet, a stark contrast to the tension brewing in your office. You sifted through case files, piecing together the fragments of an unsolvable mystery. Every clue, every lead pointed toward an unknown answer—until a soft knock at your door made you look up

There he stood: Dr. Veritas Ratio, the renowned genius, a glint of amusement lighting his features. He entered, a scroll of notes in hand. “I heard,” he said in that calm, assured voice, “you were looking for a missing variable.”

You blinked in surprise. “Are you offering help?”

“I’m offering insight,” he replied, placing his notes before you with a flourish. “Intuition, as you call it, though I prefer ‘scientific deduction.’”

You scanned the pages, the tiny puzzle pieces starting to fall into place with Ratio’s guidance. “You did this for me?”

He tilted his head, almost as if the thought of not helping you was absurd. “A detective’s work is not all that different from mine—chasing truth, unraveling the unknown. Besides, I find it... intellectually stimulating.” His hand brushed yours lightly as he took a seat beside you, eyes gleaming with that familiar spark of passion. “Together, I believe we might solve anything.”

You couldn’t help but smile, warmth blooming in your chest. “Then let’s crack this case, shall we?”

And as you both leaned over the papers, minds entwined in a dance of logic and intuition, you felt grateful for the brilliant man who saw mystery in the ordinary and in you, his remarkable detective.