Umamusume: Pretty Derby (Steam)

[hayao115]

I usually install mods all at once, so I don't know the cause, but I'll let you know.
After installing the mod, all the character costume variations reverted to their normal costumes.
Is there a mod that can make it reflect that? Or is this a bug caused by UMML?

 

 

Update: Even with just the mod installed, all the costume variations reverted to the default outfit.

And, unless you delete the database, even if you restore the mod, the default outfit will remain.

Edited September 15 by hayao115

[negcham1942]

Where can I find zeroruka's base nude body?

[goofyahhcats]

5 hours ago, negcham1942 said:

Where can I find zeroruka's base nude body?

 

zeroruka base.zip

[negcham1942]

21 hours ago, goofyahhcats said:

 

zeroruka base.zip 27.68 MB · 1 download

Thanks! It looks like the original post had been deleted, so this really helped.

[negcham1942]

On 2026/9/15 at 午後4時18分, hayao115 said:

私は通常、MODをまとめてインストールするので原因はわかりませんが、後でお知らせします。MOD
をインストールした後、すべてのキャラクターのコスチュームバリエーションが通常のコスチュームに戻ってしまいました。
それを反映させるMODはありますか？それともこれはUMMLによるバグでしょうか？

 

 

追記：MODをインストールしただけでも、すべてのコスチュームバリエーションがデフォルトの衣装に戻ってしまいました。

また、データベースを削除しない限り、たとえMODを復元しても、デフォルトの衣装はそのまま残ります。

Hello. I wonder if you might have selected "Restore All" from "Restore Assets"?

Try this: Restore All -> Delete Database -> Close UMML -> Launch the game -> Go to the home screen, then close the game -> Try installing the mods again via UMML.

I was playing with the shared outfit set to the "school swimsuit (nude)" option, but suddenly it reverted to a standard school swimsuit. It turned out the cause was the "Restore Assets" function. So give it a try.

Google Translate.

[negcham1942]

I was following the steps on page 37 of this topic but got stuck at the Unity stage.
I tried switching from the swimsuit version to the "Zeroruka Body," but an error occurred during the "Generate Skinned Mesh Component" step. Is it actually impossible to switch to a different body?

How do I get the swimsuit off to make the character naked?

[goofyahhcats]

2 hours ago, negcham1942 said:

I was following the steps on page 37 of this topic but got stuck at the Unity stage.
I tried switching from the swimsuit version to the "Zeroruka Body," but an error occurred during the "Generate Skinned Mesh Component" step. Is it actually impossible to switch to a different body?

How do I get the swimsuit off to make the character naked?

did you transfer weight on zeroruka base? also what error you see? need screenshot

[negcham1942]

21分前、goofyahhcatsさんが言いました：

ゼロルカベースに重量を移動しましたか？また、どのようなエラーが表示されますか？スクリーンショットが必要です。

Zerorukaベースの重量調整はしていなかったかもしれない…。

 

これがエラーです。

Edited September 18 by negcham1942

[goofyahhcats]

8 minutes ago, negcham1942 said:

I might not have tweaked the weights on the Zeroruka base...

This is the error.

it seem you need edit zeroruka model first, into T pose, transfer weight same as swimsuit
that error is vertex weight name not exist

btw did you edited?

Edited September 18 by goofyahhcats

[negcham1942]

18 minutes ago, goofyahhcats said:

まず、zeroruka モデルを編集して T ポーズにして、ウェイトを水着と同じに転送する必要があるようです。
そのエラーは頂点ウェイト名が存在しないことです

。ところで、編集しましたか？

I apologize. Since this was my first time seeing this screen, I hadn't made any edits at all.

[negcham1942]

52 minutes ago, goofyahhcats said:

まず、zeroruka モデルを編集して T ポーズにして、ウェイトを水着と同じに転送する必要があるようです。
そのエラーは頂点ウェイト名が存在しないことです

。ところで、編集しましたか？

How do I create vertex weight names?
I've finally managed to get the vertex weight section to appear, at least.

[goofyahhcats]

51 minutes ago, negcham1942 said:

How do I create vertex weight names?
I've finally managed to get the vertex weight section to appear, at least.

 

zeroruka base was not for uma, you need know model editing & pose

 

*sorry, i cannot tell how to

[negcham1942]

8 hours ago, goofyahhcats said:

 

zerorukaベースはuma用ではありません。モデル編集とポーズの知識が必要です。

 

*申し訳ありませんが、

I'll give up.

[Amynous]

Does anyone know if Ran's Mayano Top Gun nude base mod is still available anywhere? It was removed from Patreon.
https://www.patreon.com/cw/RanKaeder/posts

Also, does anyone know if they released any mods that include Rice Shower as of late? I know there is the reverse bunny suit mod and the one from F4de, but those have been the only 2 I have ever found and if mods are removed from Ran's Patreon I just want to check to make sure I haven't missed any.

Then lastly, I've been away from the modding scene for a while, what's new? How's it been? looking back it seems like the general interest has been on adding jiggle physics and making better guides.

[einnarr]

8 hours ago, negcham1942 said:

I'll give up.

Model conversion is a hard place to start. I began with editing existing models myself.
A few of my mods are just outfits layered on top of a nude base, and edits like this are simple enough:

It might be a good way to get a feel for mod work in general, not just for this one.

[negcham1942]

2 hours ago, einnarr said:

モデルの変換は、始めるのが難しい作業です。私はまず、既存のモデルを自分で編集することから始めました。
私のMODの中には、裸のベースの上に衣装を重ねただけのものもあり、このような編集は比較的簡単です。

これは、今回のMODに限らず、MOD制作全般の感覚をつかむ良い方法かもしれません。

You're right—jumping straight into swapping bodies without any prior modeling experience was probably too ambitious. I'll start by trying to put clothes on and take them off instead.

[goofyahhcats]

i posed Hchimi release
*see changelog for info
*currently tested on Steam JPN

any suggestion can comment this / put into issue

[ikasuke]

どなたかヴィヴロスかサトノダイヤモンドのおっぱい大きいバージョンのスクール水着モデルを作成することは可能ですか？

わからな過ぎて・・・

もちろんお金は払います！！

[goofyahhcats]

Hchimi update

• Implemented free camera to PhotoStudio

• Ported Half Life 2 noclip from Source SDK

• Added cyspring_bust_modifier and you don't need modifiy asset

Known Issues

1. PhotoStudio can't move freely because post-processing effects are applied after rendering.

[reos0011]

Sorry, this is machine translation. If you know who it is, please let me know.

I'm having trouble importing an old mod file into Steam JP. I don't even know if this file is for Global, JP, or Android.

All I know is that there isn't a file with the same name in my current Game Dir.

 

Is the best way to solve this problem to export the file I'm trying to import using Asset Studio and examine its contents?

 

I've attached the file I'm trying to import. I've already forgotten where I downloaded it from.

2023-01-13HokkoTarumaeSwimsuit.zip

[negcham1942]

On 9/21/2026 at 5:16 PM, reos0011 said:

Sorry, this is machine translation. If you know who it is, please let me know.

I'm having trouble importing an old mod file into Steam JP. I don't even know if this file is for Global, JP, or Android.

All I know is that there isn't a file with the same name in my current Game Dir.

 

Is the best way to solve this problem to export the file I'm trying to import using Asset Studio and examine its contents?

 

I've attached the file I'm trying to import. I've already forgotten where I downloaded it from.

2023-01-13HokkoTarumaeSwimsuit.zip 10 MB · 1 download

It worked on the Steam/JP version. Make sure to place the files under "PC-s" and load them using "Import Asset Folder."

[peachy.keane]

On 9/18/2026 at 9:52 PM, Amynous said:

Does anyone know if Ran's Mayano Top Gun nude base mod is still available anywhere? It was removed from Patreon.

I wish I could say it's probably because it's being remade new and better than before, but I doubt it. Given recent events, a "whiner-baby" probably reported it...

Fortunately for you, I've been hoarding just about every lewd Umod I've been able to get my hands on; largely to prevent lost media. (but also because I have a problem)

[26.05.24] Maya (WITH Jacket).7z[26.05.24] Maya (NO Jacket).7z

On 9/18/2026 at 9:52 PM, Amynous said:

Also, does anyone know if they released any mods that include Rice Shower as of late? I know there is the reverse bunny suit mod and the one from F4de, but those have been the only 2 I have ever found and if mods are removed from Ran's Patreon I just want to check to make sure I haven't missed any.

In regard to recent Rice mods-- no, there's nothing any more recent than those. (Or, at least, there's not anything major that I'm aware of.)

Again though, I have a... sizable collection. Perhaps one of these older mods from Ran could be something that you don't already have:

[23.01.13] Raisu (Maid Dress).7z[24.07.05] Raisu (Sexy Seifuku).7z[26.04.23] Raisu (Cutie Finder).7z

 

[reos0011]

16 hours ago, negcham1942 said:

Steam/JP版では動作しました。「PC-s」フォルダにファイルを配置し、「アセットフォルダのインポート」を使用して読み込んでください。

Thank you! I was using UMML incorrectly!

[goofyahhcats]

it took me few attempt
so basicly the problem is Transform::SetParent & Character Tracking in CutInHelper

is not ready yet

Edited September 24 by goofyahhcats

[RyDeTV]

Is there a modpack or a collection of semi nude and nude mods?