PRISM

[Boogsh]

Hi guys! I just want to say thank you to everyone who's doing their best to create a mod for the community. Kudos to you all!

[minazuki]

13 hours ago, perfectdark023 said:

 

we stopped using TEXCOORD8.xy and TEXCOORD9.zw but try this https://www.deviantart.com/stash/01ct22ypxrbh. TEXCOORD9 is the boobs and i guess ass if they have jiggle physics. you just delete them and keep TEXCOORD.xy

If I just delete TEXCOORD8.xy, etc. It just give a result in this:

 

And the vertices position in Blender is mean nothing, even I have edited one of the boobs like this, the game result is the same.

 

Just after a few tries, I found @fitzgerald4 script:

Quote

For this scenario, make sure to apply the diff below to the g1m_import_meshes.py script, to override shader.

- lod_block += name
+ name = b'@FA9C8043\x00\x00\x00\x00\x00\x00\x00' # any shader name of MESH_LOD section in mesh_metadata.json
+ lod_block += name

It works, it can disable the jiggle physics and make boobs shape changed in game.

 

Also, I am busy on this week, I may release my simple nude mod on next week.

I will include the blender file for others who are blender experts to make a better nude mod.

Edited April 27, 2025 by minazuki

[minazuki]

And about the body seams.

Now we should using the regular add-on (forget about FT2).

But we may still have a little seam around the shoulder.

To fix it, we need Normalize All body mesh.

After normalize the weight, you should see the shoulder weight has a slightly different.

So just copy it to make them same.

 

Before Normalize All, the weight is the same, even you click on it. (Click on it is also say 0.008 for bone_79)

 

After Normalize All, if you click on it, you can see the weight value is not exactly the same.

Edited April 27, 2025 by minazuki
Update the wrong image

[zed1472]

Just want to say what a great job is being done, good work on the hardwork

and the puzzle of figuring this one out almost sounds amusing

[xenodoax]

@minazuki I have a case study for you, or anyone else who wants to analyze the problem at hand!
***LONG POST INCOMING***

So I was able to follow your steps and I can get the body meshes re-imported back into a .g1m going through the standard Blender script (blender_3dmigoto.py -- the one that exports out .vb0.)

This part is no issue. Its the actual modding of the body meshes to remove the clothing impressions where I am lost... because with Prism,
**we currently don't have a reliable method to patch the vanilla body mesh with a nude body template**.
**This is key and what makes modding XVV super easy.

Screenshot 1: Vanilla body meshes exported through blender_3dmigoto.py (meshes normalized, no seams visible)

Spoiler

XVV Modding and Blender Techniques
------
So in XVV, we don't have segmented body meshes like we do in Prism.
A body in XVV is (typically) only a single mesh object with the entire weight set applied. This makes body mesh editing really easy. Let's say the top half of the girl's torso is covered up by a bikini top. When I remove the bikini top mesh in XVV, the vanilla body mesh underneath is blank (showing a large gaping hole where the breasts should be). When I see this, I would then utilize the nude body template that has a universal set of weights that works for the given girls' body type.
What the nude body template essentially is - is a fully modified nude body (with nipples and vagina - not originally in game) that I use as a template to transfer weights onto. Once the weights of the vanilla body are transferred to it, I can then use it to patch any holes in the vanilla mesh.

To fix the girls' upper half and make her breasts appear (where the gaping holes were), I would cut the vanilla body mesh at the waist and upward - leaving only her waist and down left on screen. Then, I would select the upper half of the nude body template's body (with the fully formed breasts and weights), and JOIN that mesh to the lower half of the vanilla body.

The end result is the vanilla body will now have fully formed breasts, instead of the gaping holes. Normalize all, then test in game. DONE. 
That's XVV modding.
------
WE NEED A SIMILAR TECHNIQUE FOR PRISM.

Now I'm very good at modding XVV with the above technique - having made 500+ costume mods for XVV in my time.
But Prism is a completely different beast.
When I import the vanilla body meshes for the Pareo Bikini (218461fb.g1m) - THEY ARE SEGMENTED!! 😖

So let's say I wanted to incorporate the same XVV techniques described above for modding Fiona's left breast on this suit in Prism.
So let's take a look at the vanilla meshes for this suit in Blender.

Screenshot 2: Vanilla body mesh in Blender for Fiona's left breast - Suit: Pareo Bikini. Highlighted portions should clothing impressions I want to modify out of the mesh.

Spoiler

As you can see in screenshot 1 and 2, I want to remove these indentions on her breasts. That is my goal. So as an XVV modder, how would I do this?
I would incorporate the nude body template and transfer the weights from the vanilla body onto the template.
Now it appears there is one that exists already in the files of the game - 7ce546e8.g1m

Screenshot 3:  7ce546e8.g1m - potential nude body template as it appears in Blender.

Spoiler

But looking closely, her left breast is segmented into TWO body meshes! (oh no!)

Screenshot 4: Detailed look at left breast meshes on 7ce546e8.g1m - potential nude body template 

Spoiler

So now there is a conundrum I have as an XVV modder...
As stated earlier, XVV body meshes are not segmented. So the trimming of the vertices and joining is very straightforward. But with Prism, this is not the case.

Looking closely at this scenario, I need BOTH meshes 12 and 16 to fully form the left breast with no clothing impressions.
So I will perform a JOIN of these meshes to create one cohesive object that I can use to patch.
I will also WIPE all weights, so the cohesive objects is completely free of weights.
Finally, I will TRANSFER the weights from the vanilla left breast mesh (object 0 in 218461fb.g1m) to the cohesive object.
This cohesive object will essentially be my nude body template in XVV modding terms, but it will only be for the left breast.
So I will try this.

Screenshot 5: Object 0.vb (left breast) from 218461fb.g1m - default mesh and weights
Screenshot 6: Cohesive object 16.vb (made from joining meshes 12 and 16 from 7ce546e8.g1m - weights transferred from vanilla Object 0.vb)
 

Spoiler

Screenshot 7: Object 0.vb (left breast) from 218461fb.g1m - vertices cleared and ready for patch from cohesive object with transferred weights

Spoiler

Screenshot 8: Cohesive object is clipped/patched and ready to join to vanilla object 0.

Spoiler

Now that the mod is done, I will now normalize all and export this modified left breast mesh as object 0, then re-pack the .g1m and test in game.

Screenshot 9: This is the result of this exercise in game
 

Spoiler

A completely tragic outcome.
So what has been learned?
Well, it appears weights have nothing to do with this. Because the weights of the cohesive object/nude body template seem to be absolutely identical.
We also know it has nothing to do with the import/export .vb script - since we were able to push the vanilla meshes through it with no distortion.

So at this point... I'm completely stumped. What could be causing this destruction of the vanilla body mesh in game for any modified meshes I push into it?
I saw you and @perfectdark023 were talking about the UV maps... but I tried transferring these over to the modded mesh and couldn't get it to work.
I don't really understand how the UV maps inform the game. You guys mentioned potentially physics... but this has never been the case in XVV modding.

So yea. This is where I am.
This post was thorough and long but necessary, to communicate the issues I'm facing as an XVV modder trying to mod this game.

Thank you for reading.

[perfectdark023]

2 hours ago, xenodoax said:

@minazuki I have a case study for you, or anyone else who wants to analyze the problem at hand!
***LONG POST INCOMING***

So I was able to follow your steps and I can get the body meshes re-imported back into a .g1m going through the standard Blender script (blender_3dmigoto.py -- the one that exports out .vb0.)

This part is no issue. Its the actual modding of the body meshes to remove the clothing impressions where I am lost... because with Prism,
**we currently don't have a reliable method to patch the vanilla body mesh with a nude body template**.
**This is key and what makes modding XVV super easy.

Screenshot 1: Vanilla body meshes exported through blender_3dmigoto.py (meshes normalized, no seams visible)

  Reveal hidden contents

XVV Modding and Blender Techniques
------
So in XVV, we don't have segmented body meshes like we do in Prism.
A body in XVV is (typically) only a single mesh object with the entire weight set applied. This makes body mesh editing really easy. Let's say the top half of the girl's torso is covered up by a bikini top. When I remove the bikini top mesh in XVV, the vanilla body mesh underneath is blank (showing a large gaping hole where the breasts should be). When I see this, I would then utilize the nude body template that has a universal set of weights that works for the given girls' body type.
What the nude body template essentially is - is a fully modified nude body (with nipples and vagina - not originally in game) that I use as a template to transfer weights onto. Once the weights of the vanilla body are transferred to it, I can then use it to patch any holes in the vanilla mesh.

To fix the girls' upper half and make her breasts appear (where the gaping holes were), I would cut the vanilla body mesh at the waist and upward - leaving only her waist and down left on screen. Then, I would select the upper half of the nude body template's body (with the fully formed breasts and weights), and JOIN that mesh to the lower half of the vanilla body.

The end result is the vanilla body will now have fully formed breasts, instead of the gaping holes. Normalize all, then test in game. DONE. 
That's XVV modding.
------
WE NEED A SIMILAR TECHNIQUE FOR PRISM.

Now I'm very good at modding XVV with the above technique - having made 500+ costume mods for XVV in my time.
But Prism is a completely different beast.
When I import the vanilla body meshes for the Pareo Bikini (218461fb.g1m) - THEY ARE SEGMENTED!! 😖

So let's say I wanted to incorporate the same XVV techniques described above for modding Fiona's left breast on this suit in Prism.
So let's take a look at the vanilla meshes for this suit in Blender.

Screenshot 2: Vanilla body mesh in Blender for Fiona's left breast - Suit: Pareo Bikini. Highlighted portions should clothing impressions I want to modify out of the mesh.

  Reveal hidden contents

As you can see in screenshot 1 and 2, I want to remove these indentions on her breasts. That is my goal. So as an XVV modder, how would I do this?
I would incorporate the nude body template and transfer the weights from the vanilla body onto the template.
Now it appears there is one that exists already in the files of the game - 7ce546e8.g1m

Screenshot 3:  7ce546e8.g1m - potential nude body template as it appears in Blender.

  Reveal hidden contents

But looking closely, her left breast is segmented into TWO body meshes! (oh no!)

Screenshot 4: Detailed look at left breast meshes on 7ce546e8.g1m - potential nude body template 

  Reveal hidden contents

So now there is a conundrum I have as an XVV modder...
As stated earlier, XVV body meshes are not segmented. So the trimming of the vertices and joining is very straightforward. But with Prism, this is not the case.

Looking closely at this scenario, I need BOTH meshes 12 and 16 to fully form the left breast with no clothing impressions.
So I will perform a JOIN of these meshes to create one cohesive object that I can use to patch.
I will also WIPE all weights, so the cohesive objects is completely free of weights.
Finally, I will TRANSFER the weights from the vanilla left breast mesh (object 0 in 218461fb.g1m) to the cohesive object.
This cohesive object will essentially be my nude body template in XVV modding terms, but it will only be for the left breast.
So I will try this.

Screenshot 5: Object 0.vb (left breast) from 218461fb.g1m - default mesh and weights
Screenshot 6: Cohesive object 16.vb (made from joining meshes 12 and 16 from 7ce546e8.g1m - weights transferred from vanilla Object 0.vb)
 

  Reveal hidden contents

Screenshot 7: Object 0.vb (left breast) from 218461fb.g1m - vertices cleared and ready for patch from cohesive object with transferred weights

  Reveal hidden contents

Screenshot 8: Cohesive object is clipped/patched and ready to join to vanilla object 0.

  Reveal hidden contents

Now that the mod is done, I will now normalize all and export this modified left breast mesh as object 0, then re-pack the .g1m and test in game.

Screenshot 9: This is the result of this exercise in game
 

  Reveal hidden contents

A completely tragic outcome.
So what has been learned?
Well, it appears weights have nothing to do with this. Because the weights of the cohesive object/nude body template seem to be absolutely identical.
We also know it has nothing to do with the import/export .vb script - since we were able to push the vanilla meshes through it with no distortion.

So at this point... I'm completely stumped. What could be causing this destruction of the vanilla body mesh in game for any modified meshes I push into it?
I saw you and @perfectdark023 were talking about the UV maps... but I tried transferring these over to the modded mesh and couldn't get it to work.
I don't really understand how the UV maps inform the game. You guys mentioned potentially physics... but this has never been the case in XVV modding.

So yea. This is where I am.
This post was thorough and long but necessary, to communicate the issues I'm facing as an XVV modder trying to mod this game.

Thank you for reading.

 

and are you using the soft body plugin and updating the breast when changing it? that's what you may need if you are not using it, if our plugin is not outdated. again i stopped using the plugin so i cant say much on it.

 

Edited April 28, 2025 by perfectdark023

[perfectdark023]

 

[xenodoax]

13 minutes ago, perfectdark023 said:

 

At what point in the workflow does this tool need to be run?

I'm not able to import this add-on into Blender.*** UPDATE BELOW



***UPDATE: 
This script is not compatible with Blender 4.2.x
So I will need to downgrade and try again.

Edited April 28, 2025 by xenodoax

[xenodoax]

5 hours ago, perfectdark023 said:

 

and are you using the soft body plugin and updating the breast when changing it? that's what you may need if you are not using it, if our plugin is not outdated. again i stopped using the plugin so i cant say much on it.

 

Hey @perfectdark023 -

So I was able to adapt the soft body plugin script and get it working for Blender 2.83.20.
I've attached a .zip containing a .blend file and the current versions of the Blender scripts after the necessary modifications.
I'm including the original soft body mesh import script before I made modifications - so it can be compared in a diff evaluator (like Notepad++).
Inside the .blend is my modded left breast mesh (0.vb) that's using the XVV weight transfer technique - explained in great detail here.

If I read the old DOA6 forum post correctly, I'm supposed to select one of the floating cubes that's from the "matching soft body region" and the edited mesh I want to use.

Screenshot 1: My Blender project's appearance with imported soft body meshes and my modded mesh 0.vb before running the plug-in.
 

Spoiler

Screenshot 2: The result in game - spiky/wrinkled boobs
 

Spoiler

So this tool is clearly doing something, but maybe I'm not using it correctly. Or maybe the changes to the script have negatively affected the output (quite possible - I did quite a lot of edits).
I've included the Blender tools here for anyone to use.

PereoBikini_LeftBreast.zip

[perfectdark023]

5 hours ago, xenodoax said:

Hey @perfectdark023 -

So I was able to adapt the soft body plugin script and get it working for Blender 2.83.20.
I've attached a .zip containing a .blend file and the current versions of the Blender scripts after the necessary modifications.
I'm including the original soft body mesh import script before I made modifications - so it can be compared in a diff evaluator (like Notepad++).
Inside the .blend is my modded left breast mesh (0.vb) that's using the XVV weight transfer technique - explained in great detail here.

If I read the old DOA6 forum post correctly, I'm supposed to select one of the floating cubes that's from the "matching soft body region" and the edited mesh I want to use.

Screenshot 1: My Blender project's appearance with imported soft body meshes and my modded mesh 0.vb before running the plug-in.
 

  Reveal hidden contents

Screenshot 2: The result in game - spiky/wrinkled boobs
 

  Reveal hidden contents

So this tool is clearly doing something, but maybe I'm not using it correctly. Or maybe the changes to the script have negatively affected the output (quite possible - I did quite a lot of edits).
I've included the Blender tools here for anyone to use.

PereoBikini_LeftBreast.zip

 

try selecting all the cubes and then update. not just one. i think if im remembering right, it hangs for a bit when you update

[xenodoax]

5 hours ago, perfectdark023 said:

 

try selecting all the cubes and then update. not just one. i think if im remembering right, it hangs for a bit when you update

The resulting mesh after selecting all cubes on that portion of the body yielded the same result.
It's most likely the script.

[xenodoax]

[xeno] Skimpier Monokini [Common] + [Honoka] [v1.2]
*Skimpy underwear option available for Common body types

Confirmed compatible for:

[Common Body]
Misaki, Tamaki, Fiona, Nanami

 

[Honoka Body]
Honoka, Elise

 

A skimpier Monokini mod with variable skimpy levels.
Common body type has options for skimpy underwear.

Honoka body type does not have skimpy underwear option.. as this body type does not have a completed body mesh on the behind, and I am currently limited on what I can do until better modding tools are made available.

There are 19 options for Common body type and 9 options for Honoka body type in the .zip - so try them all!

This mod will update all of the high-cut one piece/monokini styles for Misaki, Honoka, Tamaki, Fiona, Nanami, and Elise.

See readme in .zip for installation.

[xeno] Skimpier Monokini_[Common]_[v1.2].zip[xeno] Skimpier Monokini_[Honoka]_[v1.2].zip

*Screenshots only show Fiona in shiny monokini... but this mod updates all monokinis for the six girls listed.

Option 1 - Vanilla - No Frills

Spoiler

Option 2 - Skimpy Level 1
 

Spoiler

Option 3 - Skimpy Level 1 - No Frills
 

Spoiler

 

Option 4 - Skimpy Level 2
 

Spoiler

Option 5 - Skimpy Level 2 - No Frills
 

Spoiler

 

 

Option 6 - Skimpy Level 3

 

Spoiler

Option 7 - Skimpy Level 3 - No Frills
 

Spoiler

Option 8 - Skimpy Level 4
 

Spoiler

Option 9 - Skimpy Level 4 - No Frills
 

Spoiler

 

Edited May 9, 2025 by xenodoax
Re-uploaded mod file that was missing a couple of styles

[perfectdark023]

6 hours ago, xenodoax said:

[xeno] Skimpier Monokini [Common]
*support for Honoka/Elise coming later

Confirmed compatible for:
Misaki, Tamaki, Fiona, Nanami



A skimpier Monokini mod with variable skimpy levels.
There are five options in the .zip - so try them all!

This mod will update all of the high-cut one piece/monokini styles for Misaki, Tamaki, Fiona, and Nanami.

See readme in .zip for installation.

[xeno] Skimpier Monokini [Common].zip 74.69 MB · 74 downloads


*Screenshots only show Fiona in shiny monokini... but this mod updates all monokinis for the four girls listed.
Option 1 - Vanilla - No Frills
 

  Reveal hidden contents

Option 2 - Skimpy Level 1
 

  Reveal hidden contents

Option 3 - Skimpy Level 1 - No Frills
 

  Reveal hidden contents

 

Option 4 - Skimpy Level 2
 

  Reveal hidden contents

Option 5 - Skimpy Level 2 - No Frills
 

  Reveal hidden contents

 

 

looks like you figured it out?

[siframe]

7 hours ago, xenodoax said:

[xeno] Skimpier Monokini [Common]
*support for Honoka/Elise coming later

Confirmed compatible for:
Misaki, Tamaki, Fiona, Nanami



A skimpier Monokini mod with variable skimpy levels.
There are five options in the .zip - so try them all!

This mod will update all of the high-cut one piece/monokini styles for Misaki, Tamaki, Fiona, and Nanami.

See readme in .zip for installation.

[xeno] Skimpier Monokini [Common].zip 74.69 MB · 88 downloads


*Screenshots only show Fiona in shiny monokini... but this mod updates all monokinis for the four girls listed.
Option 1 - Vanilla - No Frills
 

  Reveal hidden contents

Option 2 - Skimpy Level 1
 

  Reveal hidden contents

Option 3 - Skimpy Level 1 - No Frills
 

  Reveal hidden contents

 

Option 4 - Skimpy Level 2
 

  Reveal hidden contents

Option 5 - Skimpy Level 2 - No Frills
 

  Reveal hidden contents

 

Looks to be working perfectly, thank you for your hard work, it's appreciated. 

[xenodoax]

6 hours ago, perfectdark023 said:

 

looks like you figured it out?

Body mesh edits are busted as shit on my machine, and I blame the import/export scripts we're working with. They don't do the job - but only for body meshes.
I can edit the clothing just by deleting vertices and the exported product is good.

Nothing has been figured out (at least by me) that points us to a working nude mod. Not yet anyway.

Edited May 2, 2025 by xenodoax

[NameIsNobody]

@xenodoax Thank you for your hard work! Personally I even prefer skimpy clothes mods to full nude, so I'm always happy to see outfit modifications like this.

[nick138]

thank you so much for the mod @xenodoax  and did you increase the jiggly a bit more?? if so thank you!

Edited May 2, 2025 by nick138

[xenodoax]

2 hours ago, nick138 said:

thank you so much for the mod @xenodoax  and did you increase the jiggly a bit more?? if so thank you!

Just the clothing modification.... no change to physics. Not even sure how we could do that.

[DOAVVP mania]

23 hours ago, xenodoax said:

[xeno] 스키니 모노키니 [일반]
*호노카/엘리스는 추후 지원

예정입니다.
미사키, 타마키, 피오나, 나나미 와 호환이 확인되었습니다. 스키니한 정도가 다양한 스키니 모노키니 모드입니다. zip 파일에는 다섯 가지 옵션이 있으니모두 사용해 보세요! 이 모드는 미사키, 타마키, 피오나, 나나미의 모든 하이컷 원피스/모노키니 스타일을 업데이트합니다. 설치 방법은 zip 파일의 readme 파일을 참조하세요.










[제노] 스키피어 모노키니 [공통].zip 74.69MB · 375회 다운로드


*스크린샷에는 피오나가 반짝이는 모노키니를 입은 모습만 나와 있습니다... 하지만 이 모드는 나열된 네 소녀의 모든 모노키니를 업데이트합니다.
옵션 1 - 바닐라 - 노프릴
 

  숨겨진 내용을 공개하세요

옵션 2 - 스킴피 레벨 1
 

  숨겨진 내용을 공개하세요

옵션 3 - 빈약한 레벨 1 - 꾸밈 없음
 

  숨겨진 내용을 공개하세요

 

옵션 4 - 스킴피 레벨 2
 

  숨겨진 내용을 공개하세요

옵션 5 - 빈약한 레벨 2 - 꾸밈 없음
 

  숨겨진 내용을 공개하세요

 

I followed the installation instructions in the readme file, but the game crashes after launching.
Is there a solution?

[joethebeast]

On 4/4/2025 at 11:05 PM, Haise Sasaki said:

"texture ID should be located in the model" that's what i tought after not finding the ID

[xenodoax]

3 hours ago, DOAVVP mania said:

I followed the installation instructions in the readme file, but the game crashes after launching.
Is there a solution?

1. Delete the modded fdata packages you added to the game from my .zip.
2. Verify Integrity of game files (if using Steam)

3. Follow the installation steps again (CAREFULLY).

This is not an easy process to get down by any means... but this is what's required at least in these early stages of modding Prism.

[zed1472]

such progress, much wow

[xenodoax]

[xeno] Skimpier Monokini is updated to [v1.1].
Honoka body type support added.
Two additional skimpy levels added for both Common and Honoka body type.
 

 

[DOAVVP mania]

On 2025. 5. 2. at 오전 12시 48분, xenodoax said:

[제노] 스킴피어 모노키니 [공통] + [호노카] [v1.1] [공통 바디] 미사키, 타마키, 피오나, 나나미

와 호환 확인됨

 

 

[호노카 바디]
호노카, 엘리스 다양한 노출도를 가진 더욱 슬림한 모노키니 모드입니다. .zip 파일에는 각 체형에 맞는 9가지 옵션이 있으니 모두 사용해 보세요! 이 모드는 미사키, 호노카, 타마키, 피오나, 나나미, 엘리스의 모든 하이컷 원피스/모노키니 스타일을 업데이트합니다. 설치 방법은 .zip 파일의 readme 파일을 참조하세요.










[제노] 스킴피어 모노키니_[v1.1].zip 261.17MB · 177회 다운로드

*스크린샷에는 피오나가 반짝이는 모노키니를 입은 모습만 나와 있습니다... 하지만 이 모드는 나열된 여섯 소녀의 모든 모노키니를 업데이트합니다.

옵션 1 - 바닐라 - 노프릴

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옵션 2 - 스킴피 레벨 1
 

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옵션 3 - 빈약한 레벨 1 - 꾸밈 없음
 

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옵션 4 - 스킴피 레벨 2
 

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옵션 5 - 빈약한 레벨 2 - 꾸밈 없음
 

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옵션 6 - 빈약한 레벨 3

 

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옵션 7 - 빈약한 레벨 3 - 꾸밈 없음
 

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옵션 8 - 스킴피 레벨 4
 

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옵션 9 - 빈약한 레벨 4 - 꾸밈 없음
 

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After completing the integrity check of the game files, installing Python 3.13.
After re-reading the readme, I inserted all the prepared files (4 common, 4 honoka, yumia_mod_insert_into_rdb, yumia_mod_lib) into XVV Prism's fdata_package game directory: and executed the yumia_mod_insert_into_rdb file, but the game still crashes immediately after game launch.
Could I be missing something?

 

It's a translator, so the sentences may be rude.
We apologize if any of the sentences are strange.

[xenodoax]

11 minutes ago, DOAVVP mania said:

After completing the integrity check of the game files, installing Python 3.13.
After re-reading the readme, I inserted all the prepared files (4 common, 4 honoka, yumia_mod_insert_into_rdb, yumia_mod_lib) into XVV Prism's fdata_package game directory: and executed the yumia_mod_insert_into_rdb file, but the game still crashes immediately after game launch.
Could I be missing something?

 

It's a translator, so the sentences may be rude.
We apologize if any of the sentences are strange.

You might be missing a Python dependency. Try running the script yuma_mod_insert_into_rdb.py in Command Prompt or an IDE - such as Visual Studio Code - to see if there's an error when you're running yumia_mod_insert_into_rdb.py.

There are resources online to understand how to do this.