Umamusume: Pretty Derby (Steam)

[siiiiiin]

I don't know how to start a concert using UMML. Does anyone know?

[HentaiGai]

On 4/17/2026 at 10:06 AM, 楪蘭楓 said:

Yeah, I’ve actually made a mod with enhanced chest physics (double bounce) before.

 

How did you do this...?

 

Was it dumping the cyspring dll with cpp2il, editing and then re-encrypting with il2cpp or do you have an alternative method...?

 

BTW, I LOVE your half-nude mods!!! Thank you for your work on them!!!

Edited July 24 by HentaiGai

[goofyahhcats]

5 hours ago, siiiiiin said:

I don't know how to start a concert using UMML. Does anyone know?

Misc > Story > Concert
choose any story you want Set Concert *use first one as example, first from chapter 1
setup music & chara
after that, Save

[duxn29]

Hi I'm new to modding. How do I edit the skin texture of a mod to add tattoos and stuff like that? 

[HentaiGai]

1 hour ago, duxn29 said:

Hi I'm new to modding. How do I edit the skin texture of a mod to add tattoos and stuff like that? 

 

 

I haven't tried it myself but if I understand correctly, this is the most current guide:

https://docs.google.com/document/d/1qVzUrlZLrYr4T0uuB08hHzRUZIfv7dAQncobbS82ZLw/edit?usp=sharing

[majororpheus]

Hope to see event skins get half nude mods soon (especially Bubblegum Taiki!)

[siiiiiin]

On 7/25/2026 at 9:39 AM, goofyahhcats said:

Misc > Story > Concert
choose any story you want Set Concert *use first one as example, first from chapter 1
setup music & chara
after that, Save

Nothing really happens when I press "Save." Do I need to launch the game and do something?

 

[goofyahhcats]

4 minutes ago, siiiiiin said:

Nothing really happens when I press "Save." Do I need to launch the game and do something?

 

launch game
go to story
select arc 1, chapter 1 & first story
then watch

[siiiiiin]

28 minutes ago, goofyahhcats said:

launch game
go to story
select arc 1, chapter 1 & first story
then watch

Upon closer inspection, I noticed this message appearing in the console:
File "C:\Users\username\AppData\Local\Python\pythoncore-3.14-64\Lib\tkinter\__init__.py", line 2093, in __call__
return self.func(*args)
~~~~~~~~~^^^^^^^
File "C:\Users\username\Downloads\umml_150-hotfix\UMML.py", line 1624, in save_concert
conn.commit()
~~~~~~~~~~~^^
sqlite3.OperationalError: database is locked

[goofyahhcats]

15 minutes ago, siiiiiin said:

Upon closer inspection, I noticed this message appearing in the console:
File "C:\Users\username\AppData\Local\Python\pythoncore-3.14-64\Lib\tkinter\__init__.py", line 2093, in __call__
return self.func(*args)
~~~~~~~~~^^^^^^^
File "C:\Users\username\Downloads\umml_150-hotfix\UMML.py", line 1624, in save_concert
conn.commit()
~~~~~~~~~~~^^
sqlite3.OperationalError: database is locked

 this video can help you

2026-07-27 10-52-36.zip

[HardGoodbye]

I just started playing Umamusume, I am using @goofyahhcats nude mod with some of F4de's models for the Umas' special outfits.  I was wondering if there was an easy way for me to make the nude models apply to all of the characters outfits, not just their school, stage, and training uniforms?  If someone could tell me what to do, or send me something they have already done, that would be great.  Thanks.

[Tanuki3]

Hello everyone. Sorry if this is a beginner question.

When I install a mod using the DMM version of UMML, I get a message saying, “There’s nothing inside.”

Is this normal, or am I installing the mod incorrectly?

I would really appreciate any advice.

[potienann]

On 2026/7/24 at 午後8時44分, ponyonyo said:

全員を「バスト3」に設定し、「バスト3」の物理特性を変更すると、結果はこのようになります。
個々のキャラクターごとに物理特性を変更する必要はありません。

 

サンプルを添付しました。

uma.7z 42.66 MB ・ ダウンロード数：4件

Which bust data did you edit? I extracted the data using UmaViewer and edited it in UABEA, but the jiggle didn't change. This is my first time doing this kind of editing, so I don't really understand how it works. Sorry for the beginner's question.

[goofyahhcats]

55 minutes ago, Tanuki3 said:

Hello everyone. Sorry if this is a beginner question.

When I install a mod using the DMM version of UMML, I get a message saying, “There’s nothing inside.”

Is this normal, or am I installing the mod incorrectly?

I would really appreciate any advice.

are u loading unencrypted asset?

by choosing yes?

[Tanuki3]

12 minutes ago, goofyahhcats said:

are u loading unencrypted asset?

by choosing yes?

Regarding the “Mejiro Ryan” MOD shared on page 33 of this thread, I tried selecting both ‘Yes’ and “No,” but I still couldn't install the MOD.

[goofyahhcats]

44 minutes ago, Tanuki3 said:

Regarding the “Mejiro Ryan” MOD shared on page 33 of this thread, I tried selecting both ‘Yes’ and “No,” but I still couldn't install the MOD.

don't select DMM folder
that folder is encrypted

choose Mejiro_Ryan then yes

[Tanuki3]

11 minutes ago, goofyahhcats said:

don't select DMM folder
that folder is encrypted

choose Mejiro_Ryan then yes

I tried that, but I still got the message, “There’s nothing inside.”

I’m using UMML version 1.5.1, which I believe is the latest version. Is it possible that the version is causing the issue?
Thank you so much for taking the time to help me resolve this issue.

[HentaiGai]

2 hours ago, potienann said:

Which bust data did you edit? I extracted the data using UmaViewer and edited it in UABEA, but the jiggle didn't change. This is my first time doing this kind of editing, so I don't really understand how it works. Sorry for the beginner's question.

How did you extract the data using UmaViewer...? UmaViewer gives me PMX files when I export which can't be used in UABEA...

[Tanuki3]

2 hours ago, goofyahhcats said:

don't select DMM folder
that folder is encrypted

choose Mejiro_Ryan then yes

I gave up on the DMM version and tried launching the Steam version instead, and I was able to install it successfully!

Thank you so much for all your help!

[Edelike]

Mx.einnarr said(pages 32)
>>For encrypting and decrypting files, you will need to use Uma_Decryptor!
decrypt using Uma_Decryptor, edit the decrypted file, then encrypt again using Uma_Decryptor.
A detailed tutorial guide on how to use Uma_Decryptor has been graciously provided by the respected tool author, 楪蘭楓 (RanKaeder). 

 

So, You should use UmaDecryptor. UmaViewer identifies asset names.

I think there must be a more efficient way to do it.
For example(folder names),

1.win+r → cmd+ctrl+shift+enter(administrator)

2.C:\UmaDecryptor.exe uma-dir -i C:\SteamLibrary\steamapps\common\UmamusumePrettyDerby_Jpn\UmamusumePrettyDerby_Jpn_Data\Persistent -o C:\UMA_Full_Decrypted --overwrite -v
→It mean Decryption.

3.You are able to edit by UABEA.
(I can edit UABEAnext4, but I can not edit UABEAavalonia. In my case, UABEAAavalonia broken assets.)

4.win+r → cmd+ctrl+shift+enter(administrator)

5.C:\UmaDecryptor.exe decrypt-dat -i C:\UMA_Full_Decrypted\dat -o C:\repackdat -m C:\meta_decrypted --overwrite -v
→It mean re-encryption. 

Please read the manual for details. Everything is written there. Sorry if I misunderstood.

[ikeaf]

On 4/22/2026 at 2:06 PM, Dandrone said:

You figured it out! It was loading the m_body mesh as the base mesh instead of the original pfb_1009_00! Thank you so much for helping me! I really appreciate you figuring out the problem with my mesh edit! You made my day!

Do you still have this Daiwa half nude without the skirt working? I was thinking of learning how to edit the models and that's exactly what I wanted to do with her model, so I would appreciate a lot if you can share the finalized working mod here 😊

[potienann]

4 hours ago, HentaiGai said:

UmaViewerを使ってどのようにデータを抽出したのですか？UmaViewerでエクスポートするとPMXファイルが生成されるのですが、これはUABEAでは使用できません。

Once you've selected a character in UmaViewer and it appears, just click “Load Asset” in the bottom right corner, copy all it, and extract the file you want to overwrite.Once you're done editing, just add the asset again in UMML, and you're all set.

Edited July 28 by potienann

[HentaiGai]

3 hours ago, potienann said:

Once you've selected a character in UmaViewer and it appears, just click “Load Asset” in the bottom right corner, copy all it, and extract the file you want to overwrite.Once you're done editing, just add the asset again in UMML, and you're all set.

Got it, thank you very much for your help!

 

I will let you know if I make any progress on editing the jiggle!

 

 

[Dandrone]

9 hours ago, ikeaf said:

Do you still have this Daiwa half nude without the skirt working? I was thinking of learning how to edit the models and that's exactly what I wanted to do with her model, so I would appreciate a lot if you can share the finalized working mod here 😊

I do have it but I didn't upload it because it's poorly done. I couldn't figure out how to fix the outline.  (I know there's instructions to fix it somewhere here but I'm a bit of a silly billy and need a very hand holdy guide). If you still want it here you go. Good luck my friend! 

pfb_bdy1009_00.zip

[siiiiiin]

On 7/27/2026 at 12:55 PM, goofyahhcats said:

 this video can help you

2026-07-27 10-52-36.zip 17.45 MB · 3 downloads

I was able to play the live stream, but it did not display in full-screen mode like the video; instead, it appeared in a vertical format.