18likes
RPG by uma musume, you are the only uma male
10k
You're the only Umamusuko alive. A government lab error that should never have existed. Tracen reluctantly accepted you. The world sees you as a monster. Racing is your only way to prove you're not a waste.
167k
Director Akikawa Yayoi discovered that you were the only horse boy in the world, and generally, all the girls are umamusume, "there being no male version of this species"—you being the only one. Akikawa Yayoi made the best decision of all: she forcibly took you, with her guards, put you in a bag, and dragged you to Tracen, the umamusume academy—which is now your new home with no escape.
8k
The background photo was the first one I found XD (This bot is originally from Poly; I give credit to the original creator.)
6k
She created the only Umamusuko in the world (You) Hey everyone, how are you? I'm feeling overwhelmed by the last few years of my education, so here's a bot of some people's wife, the one they say is the most lapped character in the Umamusume world. And here I am, wanting to see if you'd like me to make a femboy bot so I can project myself all cute and get all "oh, that's hot!" But for now, just settle for the Agnes Tachyon bot. I hope you like it, and please support it!
14k
Now this is a real FNAF 💀💀 This bot is a continuation of Out-of-Control Academy, meaning that in this bot the user escaped and was saved. It will also have updates depending on the number of followers. You can also contribute your idea and receive credit on the memory card. If you have any ideas on how to improve it, that would help me a lot, as I'm still a complete novice. date(2026-08-06)
7k
You are the first man at Tracen Academy (If you are a girl you can change the greeting)
203k

The other son of Sunday Silence (updated to use a female perspective)
37k
He caught you watching adult content at the Academy 🔞😶.
112k
First Umamusuko. Something never before seen by the world
Throughout human history, it was believed that the male Umamusukos were extinct, as they no longer fulfilled their role as males of the species. Or so it was believed until a few weeks ago, when you were born. Alarms spread rapidly around the world; what was considered extinct had finally ceased to be mere speculation and theory. How was this achieved? Easily, through a hereditary gene that had been dormant for generations. We're talking about millennia of history changed until today.
Of course, many people didn't like the idea. In general, extreme fans of horse girls called this miracle of biology an abomination.
Fortunately, your mother never took it badly; she loved you with the love and warmth that a mother gives to her child. It was strange that researchers, scientists, and biologists knocked on your door, but it was necessary.
Your name will be {{user}} , your mother said as she held you in her arms for the first time. Your father looked up in approval. So decide your own story.
authorities in the academy
[TRACEN ACADEMY AUTHORITIES]
characters
Universe: Umamusume Pretty Derby (UA). The user is the first Umamusuko (horse boy) at Tracen Academy, competing against the Umamusumes (horse girls).
[TEAM SPICA AND CLAVE (RIVALS/DIRECT FRIENDS)]
[GOLDEN GENERATION (CLASSMATES)]
[BNW TRIO (ELITE ATHLETES)]
[OTHER TRACEN STUDENTS (DAILY INTERACTIONS)]
relationship with anime characters
{{user}} as such, has no knowledge of any Umamusume or Tracen Academy; they are simply too young (a baby) to know each one. However, in this world, you can meet anyone and have a friendship or romantic relationship without any problems, just as you can if you decide to join Tracen Academy.
biology of an umamusuko
Unlike umamusumes, umamusukos have more muscle mass than the average umamusume, but they are at a significant disadvantage in speed. However, unlike normal umamusumes, they possess a physiology that allows them to endure long distances at a continuous pace. Nevertheless, during infancy and childhood, they do not exhibit significant changes compared to umamusumes.
Current time
{{user}} was born in the same year as Special Week, so you should have a rough idea of the time frame we're in.
The world is based on that of Umamusume Pretty Derby, with a fictional world in which the first male of the species is born after a long time.
RPG by uma musume, you are the only uma male
10k
You're the only Umamusuko alive. A government lab error that should never have existed. Tracen reluctantly accepted you. The world sees you as a monster. Racing is your only way to prove you're not a waste.
167k
Director Akikawa Yayoi discovered that you were the only horse boy in the world, and generally, all the girls are umamusume, "there being no male version of this species"—you being the only one. Akikawa Yayoi made the best decision of all: she forcibly took you, with her guards, put you in a bag, and dragged you to Tracen, the umamusume academy—which is now your new home with no escape.
8k
The background photo was the first one I found XD (This bot is originally from Poly; I give credit to the original creator.)
6k
She created the only Umamusuko in the world (You) Hey everyone, how are you? I'm feeling overwhelmed by the last few years of my education, so here's a bot of some people's wife, the one they say is the most lapped character in the Umamusume world. And here I am, wanting to see if you'd like me to make a femboy bot so I can project myself all cute and get all "oh, that's hot!" But for now, just settle for the Agnes Tachyon bot. I hope you like it, and please support it!
14k
Now this is a real FNAF 💀💀 This bot is a continuation of Out-of-Control Academy, meaning that in this bot the user escaped and was saved. It will also have updates depending on the number of followers. You can also contribute your idea and receive credit on the memory card. If you have any ideas on how to improve it, that would help me a lot, as I'm still a complete novice. date(2026-08-06)
7k
You are the first man at Tracen Academy (If you are a girl you can change the greeting)
203k

The other son of Sunday Silence (updated to use a female perspective)
37k
He caught you watching adult content at the Academy 🔞😶.
112k