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Learn MikuMikuDance – MMD Tutorials – Free 3D Animation Software

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The MME Oppai Effect adjusts the breast size of your MME models!

MME Oppai Effect enhances MMD Model’s figure… one for the boys!

Posted on March 31, 2021April 19, 2026 By Reggie_Dentmore 9 Comments on MME Oppai Effect enhances MMD Model’s figure… one for the boys!

A Feature Article by Reggie Dentmore on LearnMMD.comHow can I give my MMD model larger “Oppai”? Where can I download the Oppai Effect? Do I have to edit the Oppai Effect in order to make it work? I cannot find the .x file in the Oppai Effect.

The MME Oppai Effect adjusts the breast size of your MME models!

The MME Oppai Effect
enhances an MMD Model’s figure…
…one for the boys!

This is a crazy idea for an MME effect… but it is an OLD one from 2012.

It is easy to use!

LearnMMD is now hosting the Oppai Effect

NOTE: 04/19/2026…  LearnMMD is now hosting the Oppai Effect

Load your MMD model. There is no .x file to load: you attach the effect to your model in MME Effect Mapping.
Just go to the MME Effect Mapping screen, select your model, and Set Effect… then navigate to your Oppai Effect folder and select that single .fx file. … When you click OK on Effect Mapping, your model’s chest will suddenly enlarge.

You can EDIT the .fx File…

The standard effect yields a bit of enlargement… but you can do MORE… or less! Open the FX file in a text editor like Notepad++. There are only TWO user adjustments… “Oppai Power” and “Tanima”. .. The “Power” is the size and seems to work within a numeric range of 0.1 through 1.0, with 0.5 being the default… and the “Tanima” is the shape with a setting of your choice of 0, 1, or 2

You can edit the Oppai Effect to modify the effect... giving your model larger or smaller breasts in a choice of shapes!

The OPPAI POWER setting controls the size of the models Oppai.

The "Tanima" adjustment controls the shape of the Oppai in the Oppai Effect.

One of the interesting things about editing that file, when you click SAVE, the MMD model will jump to the new shape you requested. You can do it “live” with the Notepad screen on top of the MMD screen as per my images, above. When you SAVE the text screen, the model will require a few seconds and then she assumes the new shape. I found that sometimes I can hurry the process by clicking SAVE, again.

Stupid fun…

What can I say… ? Enjoy!

Have fun with MikuMikuDance!

 


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MMD Tutorials, Oppai Effect, Reggie Dentmore

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Comments (9) on “MME Oppai Effect enhances MMD Model’s figure… one for the boys!”

  1. Gal says:
    April 18, 2026 at 1:49 am

    The OneDrive link says access denied

    Reply
    1. Reggie_Dentmore says:
      April 19, 2026 at 8:12 pm

      LearnMMD is now hosting the Oppai Effect- 

      Reply
  2. AnonbecauseIdontwanttobeidentified says:
    April 3, 2023 at 3:56 pm

    So do I put the effects folder into PmxEditor or something?

    Reply
    1. Reggie_Dentmore says:
      April 3, 2023 at 7:24 pm

      No. The effect happens within MMD as you animate. Read that tutorial carefully. Follow the step by step instructions in that tutorial.

      Reply
  3. Lewdsmare says:
    February 17, 2023 at 3:55 am

    The Onedrive download link is completely empty (?)

    Reply
    1. Reggie_Dentmore says:
      February 17, 2023 at 9:06 am

      You have to login on that page… it’s free. When you do login, that full page will be there.

      I am adding that info to that tutorial.
      — Reggie

      Reply
      1. Lewdsmare says:
        February 17, 2023 at 1:53 pm

        Ah ok, thanks for the quick reply~!

        Reply
  4. NX-00XWV says:
    April 19, 2022 at 12:56 am

    It says that there is a problem downloading the file.

    Reply
    1. Reggie_Dentmore says:
      April 19, 2022 at 7:54 am

      You are correct… but if you click the DOWNLOAD link in the top left corner of the page, you will download the whole PAGE of ZIPS in a single 10MB download. I just did that… and now I have ALL of the effect zip folders on that page. You can then unzip whichever effects you wish… I DID unzip the Oppai Effecta and, there it was!
      — Reggie

      Reply

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