Honkai Star: Rail x Reader Oneshots

The Gamble of Forever | Dad!Aventurine x Parent!Reader

Summary: Aventurine starts his day preparing to leave for work, only to be caught off guard by a heartwarming scene: his child running around in mischief while you, disheveled and radiant, chase after them in your underwear. The moment reminds him of how deeply in love he is with you, solidifying that his chaotic but beautiful family life is his greatest treasure.

Tags: Dad!Aventurine x Parent!Reader, Fluff, Domestic Bliss, Established Relationship, Married Life, Humor, Morning Chaos, Tender Moments.

Warnings: Mild suggestiveness (mention of the reader being in underwear for a comedic moment), Family fluff overload.

A/N: This was inspired by a post I saw on yt shorts where someone shared a tweet about their wife chasing their child while still in her bra, yet she still had time to smile at her husband before continuing running after the child. It made his heart skip a beat, and I just had to write this for Aventurine because it was perfect and suited him! 🥺💖

The morning sunlight filtered through the curtains, bathing the elegant yet cozy home in a golden glow. Aventurine adjusted his blazer in the hallway mirror, his eyes scanning his reflection with practiced precision. He ran a hand through his hair, ensuring every strand was in place. The faint sound of giggles from another room brought a subtle smile to his lips.

Family mornings had become his favorite gamble—chaotic, unpredictable, yet impossibly rewarding.

Aventurine turned just in time to see your child dart across the hallway, their laughter ringing through the air like music. They were wearing an oversized shirt—his, judging by the familiar shirt colour—and clutching a stuffed animal as if it were a prized trophy.

Hot on their heels came you, disheveled but radiant, holding a neatly folded outfit in one hand. The moment he saw you, his breath caught. You were still in your underwear, your hair tousled from the morning rush, and your cheeks flushed from chasing the little whirlwind. Despite the flustered look, or perhaps because of it, you were breathtaking.

You skidded to a halt as you noticed Aventurine standing there. For a brief second, your eyes met his, and you gave him a sheepish, glowing smile.

"Good morning, love," you said, voice tinged with laughter before resuming your chase. "Get back here, you little rascal!"

Aventurine leaned against the wall, his hand unconsciously adjusting the choker around his neck. He felt his heart skip a beat, his ever-present smirk softening into something far more genuine.

It was a rare and tender moment, the kind that pierced through the carefully constructed walls he’d built around his heart. He’d always known you were his anchor in a stormy sea, but seeing you like this—barefoot, glowing with life, and utterly devoted to their shared little world—made him fall for you all over again.

He closed his eyes briefly, savoring the warmth spreading through his chest. Was this how love deepened? Not in grand gestures or dramatic declarations, but in these fleeting, chaotic moments that painted a life together.

You emerged from the living room, child in tow, now successfully dressed and giggling in your arms. Aventurine straightened, his smirk returning as he held out his arms.

"Do I get a proper goodbye, or are you two planning a coup against me while I’m away?" he teased, the dramatic lilt in his voice causing your child to burst into laughter.

"Only if you keep working too much." you quipped, handing your child over to him.

Aventurine lifted them effortlessly, spinning them around until they shrieked with delight. When he finally set them down, he pulled you into his arms, his lips brushing your forehead.

“You’re incredible, you know that?” he murmured, the words soft but sincere. “I don’t say it enough.”

You smiled up at him, your hands resting on his chest. "And you’re late." you teased, leaning in for a quick kiss.

He chuckled, stepping back reluctantly. “Fine, fine. But only because I’d rather not risk losing my title as Senior Manager to some rookie.” He turned to your child, crouching to their level. “Take care of your parent, alright? Keep them out of trouble.”

“Okay!”

With one last lingering look at you, Aventurine adjusted his blazer and hat, his earring catching the light. As he stepped out the door, he couldn’t help but glance back, a rare tenderness glimmering in his eyes.

Some gambles were worth more than any jackpot. And this—this life with you—was his greatest win.