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Two Days, Two Kids by ProjectBlueJay for HappyBulbasaur
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
28 Jan 2026
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"Kakavasha." Ratio bounces Cora in his arms as he gives his husband a stern look. "I dare say I can keep two babies and three catcakes alive while you're gone for two days."
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Of Crowns and Care by ProjectBlueJay for flumnz
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
25 Jan 2026
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He has enough time to pull this off.
If he's lucky.
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Ratiorine Royal AU with Childhood Friends to Strangers to Lovers. Featuring a little angst, a happy ending, and then a Happy Ending!!
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He knows he hasn't bled on the bed.
He hasn't invited anyone to bleed on his bed. (Though he does recall a certain gambler doing so uninvited before.)
So why in Nous' name is there a speck of blood on his pillow?
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Ratio finds a tiny blonde fennec fox in his house, injured and hungry. He cares for it and patches it up and gives it a place to sleep.
So why is that same fennec not where he remembers it?
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Set in Stone by ProjectBlueJay for endlesshades
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
18 Jan 2026
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Once again, he'd reduced to crawling.
--__--
This is angst. This is just pure hurt and hell. I cried making this. Heed the tags.
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Ratio clinks his glass against the gamblers', then he finishes his glass. "What are we going to do about dessert?"
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A very short oneshot about Aventurine's impatience.
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He leaves with the confidence of a man who knows he's won the lotto, and Aventurine smiles like he's just given him the winning ticket. He waves until the door closes.
And then he collapses across his desk with a gasp.
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Aventurine's heat comes on fast and quick. Hijinks and heat ensue.
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"And it's Fool's Gold by two lengths! Followed by Beauty of Life, then Trash Bandit..."
Aventurine blanks for a moment before Topaz pokes his shoulder. "Did you tell him?"
His silence is answer enough.
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Aven goofs up, but it's okay. He makes up for it more than enough.
Series
- Part 5 of Umamusume AU!
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His rabbit ears twitch as he hears his husband move from his position on the living room couch, and his tail wags when the doctor pokes his head in. "Is it time?"
Aventurine nods, all but hopping to his mate with a smile. "Mhm!" He wraps his arms around his husband's neck, nosing at his cheek. "Now take your clothes off."
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Bunny Hybrid Aventurine is in heat, and he needs his mate!!!
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When He Loses, He Wins by ProjectBlueJay
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
08 Nov 2025
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The pitcher goes home, seething silently as he struggles not to add a felony speeding ticket to his already abhorrent day. His hands nearly dent the steering wheel as he drives, and when he gets home he slams the door so hard he's shocked it doesn't break.
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Ratio takes out frustration on a very ready and very willing husband.
Now featuring art by Fede!!
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ProjectBlueJay's Kinktober 2025! by ProjectBlueJay
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
28 Oct 2025
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Welcome to ProjectBlueJay's Kinktober 2025!
There's a new chapter coming out every day, with the exception of Day 23, which will be its own post due to it being part of the Umamusume AU.Enjoy, and please heed the tags before diving in!
Every chapter will have the outstanding/important tags in the notes section! (Ex: Avenussy/dubcon/blood, etc.) I won't do all of the tags for every chapter, just the ones more important.
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Breeding Season by ProjectBlueJay
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game), ウマ娘 プリティーダービー | Uma Musume: Pretty Derby (Anime), ウマ娘 プリティーダービー | Uma Musume: Pretty Derby (Video Game)
22 Oct 2025
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"I want another kid." Aventurine muses as Veritas steps into the practice track.
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Day 23 of my RatioRine Kinktober series, but it's a massive fic so it goes on its own!
Series
- Part 4 of Umamusume AU!
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When he walks into his classroom, 67 of his class of 73 have already sat down and begun preparing for the lesson. He notes the lack of one of his more promising students, but he settles in for the lesson anyway. There's nothing else of note during the class.
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When a student seems to be failing his course after a semester and a half of diligent work, Ratio wonders why.
Then he helps. -
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"Doctor Ratio, Doctor Ratio! What are your plans for next season?"
"Be ready for me when I come back, because I don't plan on resting for a minute."
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Baseball AU from @kerodho in twitter literally made me forth at the mouth. And then I met the genius behind the AU and got more brain worms and this spawned from those worms!!!
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In Which It Will Not Be Tolerated by ProjectBlueJay
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
05 Oct 2025
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Aventurine is called slurs.
Ratio won't let that slide.
Heed the tags.
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Making an Heir by ProjectBlueJay for atliix
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
09 Sep 2025
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After Crown Prince Kakavasha and Crown Prince Veritas get married and become kings, they need to consummate their marriage.
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I wanted them to have soft public sex. As kings. And marriage. Enjoy!!
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The Joys of Parenthood by ProjectBlueJay
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
24 Aug 2025
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Before, Aventurine would freak out his couch being ruined. "My faux-leather couch!" He once grimaced after spilling a drop of wine.
But now, Ratio watches as the man closes his eyes, sighs, and puts Cora back into the playpen on her back. The baby immediately loses all interest in him, and Aventurine looks almost heartbroken as she begins waving her hands at a plastic fish mobile.
Unfortunately, with twins, one child is only half the battle.
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Umamusume AU, after Aventurine has given birth!! Twins... Oh boy.
Series
- Part 3 of Umamusume AU!
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The Joys of Pregnancy by ProjectBlueJay
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
04 Aug 2025
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"I can't believe it!" Aventurine cries, as Ratio's ears pull back. "You ate all of my ice cream!" He watches as Ratio frowns, moving forward with a plea. "Love, please, be rational-"
Aventurine nearly screams. "Rational!! My ice cream is gone! You ate the one thing I love!"
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Some pregnancy sillies during Aventurine's pregnancy with the twins.
This will NOT be the end of this AU. I have more planned, just like I have more planned for Rota AU!!
Series
- Part 2 of Umamusume AU!
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It's fast, it's messy, it's disgusting, and it's just what they need. Ratio slides his hand up and down his erection, and Aventurine slides himself between a thick cock and a warm hand.
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RatioRine hate sex: Frotting
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No Occasion Necessary by ProjectBlueJay
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
27 Jul 2025
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From here, he can see the great Veritas Ratio for what he is: a lovesick, loyal, gentle husband.
The gambler can see the wisps of grey that are beginning to grow, and he can spot the beginning of crows' feet blooming from the doctor's eyes. He feels the careful, reverent hands pushing his golden locks behind his ear, and the gentle breath that fans his lips as he leans up for a chaste kiss.
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Gentle, soft, careful lovemaking. Because rough stuff is good, but I need these to idiots to be in love.
Aventurine has a pussy in this fic.
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There's No Cock Like Horse Cock by ProjectBlueJay
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
23 Jul 2025
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Summary
Umamusume AU!!
Ratio is a racer and Aventurine is his trainer.The dubious consent is because Aventurine pretends to be a sex toy and Ratio doesn't know it's him until a bit after everything's started. But they both do consent!!! And have furious sex afterwards.
Also Aventurine has a pussy.Series
- Part 1 of Umamusume AU!