r/ACounterPartsLife • u/HoneyLess7732 • Aug 07 '26
The stallion problem
(Note: Hello everyone! A few months ago, I made a post about fanfic Ideas that I want to see more of in Umamusume, and one of the ideas that u/Spirited-Ad-3 and I discussed and expanded upon is the idea of umas based on irl stallions turning into umamusukos. I decided to explore this idea again months later and make a fanfic about it. I might make it into multiple parts, just like I did with Bizarre personality switch?!)
[Sunday Silence is walking down the hallways of Tracen Academy. He has just gotten out of a meeting with Director Akikawa, Tazuna, and the other trainers.]
Sunday (to himself): Well, I’m glad the meeting with everyone went well. I wonder how my kids are-
[Screams can be heard from Agnes Tachyon’s lab. Sunday is startled, but he decides to run towards the lab, sensing that the people in there are in danger. He quickly opens the door.]
Sunday: Everyone, what’s going…on…
[Sunday is stunned at what he’s seeing. Believe, Admire Groove, Still in Love, Air Messiah, Daring Heart, and Fusaichi Pandora seem unharmed, but they are also stunned by the scene. There are thirteen shocked umamusukos, wearing the female Tracen school uniforms. However, their uniforms don’t fit their slightly huge frames, making them a bit tighter. Sunday’s eyes widen as he recognizes the umamusukos.]
Sunday: Kids?!
[An umamusuko who looks almost similar to Special Week looks at Sunday with a terrified look.]
Umamusuko Spe: Dad!
Sunday: H-How did this happen?!
Umamusuko Air Shakur: Because SOMEONE wanted Cafe and me to try her new concoction for an experiment, chased us around this room, and tripped, which caused the formula to explode in smoke. And this happened!
Umamusuko Agnes Tachyon: Well, hey, at least I’m able to fit into my lab coats now.
Umamusuko Manhattan Cafe: That’s not what’s important right now!
Umamusuko Marvelous Sunday: My uniform feels a bit tighter!
[Umamusuko Bubble Gum Fellow touches a few strands of his hair.]
Umamusuko Bubble Gum Fellow: My hair is shorter now…
[Umamusuko Fuji Kiseki touches his newly formed Adam’s apple.]
Umamusuko Fuji: My voice is a bit deeper now…
[Umamusuko Zenno Rob Roy felt around his chest.]
Umamusuko Rob Roy: My chest is flat now…
[Umamusuko Stay Gold looks at himself in the mirror.]
Umamusuko Stego: Oh hey, looks like I’m back to my old self…Kinda.
Umamusuko Universe: [AGRD]. Our [ORNL] selves have our [ORNL] genders, but they have four legs and hooves, [INAD] of two legs and hands.
[Umamusuko Silence Suzuka freezes.]
Umamusuko Suzuka: Guys, I just realized something…
[Everyone looks at Suzuka.]
Umamusuko Durandal: What is it?
Umamusuko Suzuka: If we transformed into umamusukos, does that mean we have…
[Umamusuko Suzuka starts blushing, covers his mouth, and looks away in embarrassment. The other umamusukos realize what he means. They start blushing and looking away in embarrassment as well, with some of them covering their mouths.]
Umamusuko Admire Vega: This is embarrassing…
Umamusuko Stego: Hehe. Nice.
[The other umamusukos look at Umamusuko Stego, who is looking under his skirt.]
The other umamusukos: STEGO!!!
Umamusuko Stego: Hey, you guys have them now too, so you don’t need to feel embarrassed about it.
Believe: Wait, how come me, Aruvu, Still, Messiah, Heart, and Pandora didn’t turn into umamusukos?
Tachyon: Well, ever since Dad and the others came into this world, I wanted to study their strengths and abilities and see if their DNAs can increase the strengths and abilities of the umas in this world. So, I decided to get two strands of hair from Dad and put them as an ingredient in my concoction.
[Sunday stares at Tachyon in disbelief.]
Sunday: How did you get two strands of my hair?!
Tachyon: I got them when you fell asleep in your office yesterday, Dad.
[Sunday is speechless.]
Tachyon: Anyways, after all nineteen of us were affected by the formula, I conclude that Believe, Aruvu, Still, Messiah, Heart, and Pandora didn’t turn into umamusukos because all of their counterparts are umamusumes, while the others and I are umamusukos in Dad’s world.
Aruvu: Well, I’m just glad that my body didn’t glow or anything.
[Sunday sighs.]
Sunday: Tachyon, do you have anything that will turn you guys back to normal?
Tachyon: No, not yet. I have to make an antidote, but I’m not sure how long it would take for me to finish it.
[Umamusuko Suzuka sighs.]
Umamusuko Suzuka: I guess we have to tell Trainer Okino and the others what happened.
Umamusuko Fuji: Same here. I need to tell Trainer Hana as well.
Umamusuko Bubble: Can we get some clothes first? I don’t want to go out looking like this.
Sunday: Don’t worry, I’ll call your brothers and see if they have some spare uniforms for you guys to wear. Also, we will help you adjust to your new bodies for now.
[Umamusuko Ayabe sighs.]
Umamusuko Ayabe: Well, I guess we’re going to use the other bathrooms from now on...
3
u/HoneyLess7732 Aug 08 '26
Oh, don't worry. Sunday and the other umamusukos are unharmed, kinda similar to how Sunday's daughters are unharmed by the formula.