CivArchive
    M4CROM4STI4 - Huge Natural Breasts Physics - Wan2.2 Video LoRa - K3NK - Low noise I2V - v1.0
    NSFW

    KOFI https://docs.google.com/forms/d/e/1FAIpQLScltzaQXTF2VFWRWVaqPSzJXYyNBF9hUQOLI8aBCyLrpCM1_w/viewform?usp=dialog

    Big Macromastia Breast LoRa for Wan2.2 is here

    Same dataset as my previous versions

    • Trained at 211 res on a dataset of 889 clips 1sec to 3sec (several source videos at 16fps)

    *can produce strange pubic hair or very large labia, i think is the downsides of using some japanese censoreship clips.. forgot to caption about that.. too late now 😂

    The workflow im using is:

    Example T2V prompt:

    At the beginning of the video, a m4crom4sti4 overweight fatty black woman with oiled and shinny skin is in the distance outdoors at golden hour. She has dark mahogany hair with red undertones ponytail, and (oversized macromastia breasts). She is fully nude, totally naked model showing natural skin texture. She stretches seductively while breaking eye contact with the camera. Her macromastia breasts jiggle with each movement. As the scene progresses, she spins around with a confident expression. She tilts her head at the camera. She maintains eye contact with a shy expression while playing with her nipples. In the final part of the video, the camera does a sharp zoom-in close-up on the woman's cleavage as she moans softly. The bakground is silky canopy bed.
    {an asian woman|a black woman|a woman with fair skin} with M4CROM4STI4 wearing a {military suit|business woman suit|flight attendant attire}. Her skin is fair, and she has {long wavy brown|bobcut|pigtails|ponytail|short} {crimson|brown|white|blue|blonde} hair. Her breasts are gigantic. She wears minimal makeup, accentuating her natural beauty. The lighting is soft, highlighting her curves and creating a sensual ambiance. Her expression is sultry, with slightly parted lips and a confident stance. She {sways her hips|dances|squats}. The background is dark, drawing focus to her.
    A beautiful woman with large m4crom4sti4 breasts and dark bobcut hair, stands nude in a softly lit room, her fair skin glowing. She has big blue eyes gaze directly at the camera. Her breasts are full and natural, with pink nipples. She has a slender waist and a flat stomach. Her pose is relaxed, with her arms hanging loosely by her sides. The background features a white wall and a wooden dresser with a green plant on top. The camera angle is eye-level, capturing her from the waist up.
    a woman with m4crom4sti4 with large breasts, wearing no clothes, standing in a bathroom. She is facing away from the camera and is seen tying her hair up with a hair tie. The bathroom has white walls and a white door. The woman's body shape is curvy, and her breasts are prominent. The movement of her breasts is minimal as she ties her hair. The woman's position is upright, and she is facing the door.

    Have fun! 😎

    ***** This LoRA is shared without warranties and with the condition that it is used in a lawful and responsible way. I do not support or take responsibility for illegal, harmful, or harassing uses. By downloading or using it, you accept that you are solely responsible for how it is used. *****

    Description

    FAQ

    Comments (40)

    AlberistSep 29, 2025· 1 reaction
    CivitAI

    Discovered today that this actually plays pretty well with 2d or outright cartoony starting frames if you only use the high pass lora. Still looking for ways to more strongly preserve the 2d look, but a large number of high pass steps and a low number of low pass steps with the lightx2v lora only on the low pass seems to work pretty well.

    mapo3obOct 1, 2025
    CivitAI

    Could you make an SFW version? It would be cool for the sizes to be noticeable even in a variety of clothes.

    K3NK
    Author
    Oct 1, 2025

    it should produce clothed breasts if you prompt for it, not something that i tested much tho..

    JellaiOct 1, 2025
    CivitAI

    889 clips!!! how long did this take to train? And on what hardware? That sounds intense!

    K3NK
    Author
    Oct 1, 2025· 2 reactions

    i train at 211 resolution with framebuckets [13, 32, 48, 64] to cover up the longer clips, i have a 4090 training all locally, i can train at higher res but need to use blockswap so is like 50% slower,, havint that many clips is taking arround 7 to 10 seconds per iteration

    JellaiOct 1, 2025

    @K3NK Wow. I'm guessing this took over 20 hours? I think it's clear that you don't need higher resolution videos. I think even if you needed some more detail, throwing in some images in the low noise training takes care of a lot of the needed details for something like this.

    And by "211 resolution", you mean 211x211 resolution?

    K3NK
    Author
    Oct 1, 2025· 1 reaction

    @Jellai diff pipe mantains proportions when resizing to 211, idk if is height or width, prolly height..

    CAldonniOct 7, 2025· 2 reactions
    CivitAI

    This is the absolute best lora on Civitai, period. You would think it's just for huge massive boobs, but it is not. It adds independent movement and actually realistic bounce and squish to any sized boob. It seems to give boobs real physics when they are touched or rest on something, when clothing is removed. Just excellent.

    dozalerOct 11, 2025

    How do you get small aka normal sized, even "normal big sized" boobs? I prompt "woman with small m4crom4sti4 breasts", they still turn out yuge.

    jaboorish580Apr 22, 2026

    @dozaler i also wonder, how can we get normal, even old saggy or as i like to say natural..

    brucecastle569Oct 9, 2025
    CivitAI

    Amazing lora. The best boob physics lora currently for wan2.2

    Ponder_StibbonsOct 14, 2025· 1 reaction
    CivitAI

    What's with the disclaimer? Who could possibly be against boobs?

    sarcasm83334Jan 8, 2026

    You mean the responsible use disclaimer? It means people shouldn't do this to make videos of their jogging neighbors floppy juggs without consent and post them on facebook etc.

    Ponder_StibbonsJan 8, 2026

    @sarcasm83334 Not the response I would expect from someone with a username such as yours.

    YurisMindOct 22, 2025· 2 reactions
    CivitAI

    Too unrealistic but I like it

    K3NK
    Author
    Oct 22, 2025

    is trained with real videos.. so.. xD

    YurisMindOct 22, 2025

    @K3NK what? impossible! then I like it more

    CiraxOct 22, 2025

    it looks realistic but it's unrealistic (yet also not lol), that's what makes it hot, funny and interesting. My boobs are tiny compared to this, i can only imagine the pain of having them that big haha

    alienjacksonleeNov 5, 2025
    CivitAI

    Your model is so good, could you please train a qwen version?

    K3NK
    Author
    Nov 5, 2025

    i still havent dive into qwen, i need to free up space for the qwen models. you mean qwen edit, right?

    alienjacksonleeNov 6, 2025

    @K3NK I'd prefer the qwen image version, but of course, you're the author, so it's up to you.I'll be satisfied with whichever version you train.Because I really like your m4crom4sti4 series.

    vomames639863Nov 6, 2025
    CivitAI

    File names are fucking perfect :D

    Ostap222Nov 17, 2025
    CivitAI

    hi, can I ask you the advice regarding the dataset you use for this model, those are images/videos with only breasts in the frame or the whole model with the face and lower body?

    K3NK
    Author
    Nov 17, 2025· 1 reaction

    is just the scenes as it is, i blurred some of the faces tho, so the blend mix the faces all together

    BigJuggsAINov 20, 2025
    CivitAI

    How does this Lora compare with Boob Physics Lora? (Or Bouncy Breasts?) (I'm looking for just A+ boob Physics but not the bouncing up and down part)

    K3NK
    Author
    Nov 20, 2025· 3 reactions

    this was trained with actual marcomastia adult actresses, so is all real and the movements are more natural imo

    BigJuggsAINov 21, 2025

    @K3NK were the sourcing video including the woman bouncing on her feet a lot? (I think a lot less than Bouncing boobs where boob Physics comes at the cost of having her jump up and down too much) (Am looking for top boob physics without the bouncing for this next shot)

    hoy84treyNov 24, 2025· 3 reactions
    CivitAI

    Experiencing the "strange pubic hair or very large labia"? Might have a solution for you.

    This is less than thoroughly tested but the Posing Nude LORA seems to counteract (or reduce) these effects. I've done a little testing and that LORA with settings at 1 will (magically?) remove the hair or labia and return it to normal with not a lot of change to your animation (at least that I can tell). Your mileage may vary. Needs more testing but thought it worth a mention since this LORA is so awesome.

    meritrash6350Jan 7, 2026
    CivitAI

    Anyone know of a way to prevent just....bouncing? I mean, constant bouncing coming out of nowhere for no reason?

    sarcasm83334Jan 8, 2026

    I've sometimes felt a prompt like "Her breasts jiggle naturally according to physics" to reduce movement only to scenarios where it makes sense. Though I'm only just now downloading this one, so no experience of this specific Lora.

    On another note, if you're using some of the general NSFW enhancers, I've noticed those are sometimes prone to produce that kind of an effect, as most of the content they're used for are for back and forth sex acts.

    lostintranslationJan 23, 2026
    CivitAI

    Boob physics is fantastic, this is the only lora that gives boobs proper weight, and low weight I2V even works on smaller boobs to give them a natural sag.

    However, this seems to force long porn-nails on new hands, and sometimes even existing ones grow them. Any way to fix or counteract this? Lower weights didn't work well, overall quality drops before the nails do, prompting for "short natural fingernails" doesn't seem much of an effect.

    K3NK
    Author
    Jan 23, 2026

    I've read others removing layers from the Lora with the node to avoid strange pubic hair, wan video wrapper has one, native idk

    lostintranslationFeb 18, 2026

    @K3NK If you mean tweaking lora block strength, I can do that, but which of the 40 different ones?

    Neo_fernuzJan 27, 2026· 1 reaction
    CivitAI

    Pretty good and useful lora, thanks for sharing. does it exist a one but for the big ass?

    K3NK
    Author
    Jan 27, 2026

    i have butt loras in my profile, but none is really oversized, i have material for creating a dataset, i just havent the time

    Neo_fernuzJan 27, 2026

    @K3NK i see, maybe in the future, in the meantime, enjoying your loras, cheers

    redlittlerabbitMar 12, 2026· 3 reactions
    CivitAI

    Probs my most used.

    Plz plz plz plz make an LTX2.3 version!

    Dracken1986Mar 22, 2026
    CivitAI

    Great lora thank you so much, one question though, when I use it with I2V with a reveal, I almost always get the heavy natural type breasts regardless of prompts (think hitomi tanaka type). Is there any way to get them to look less heavy if that makes sense.

    KlaudMApr 9, 2026
    CivitAI

    Is there any way to fix the incompatibility with Penislora?


    jungian20165Apr 20, 2026· 1 reaction
    CivitAI

    Only issue I'm having is it's slightly overfit to a particular kind of breast/nipple type. Maybe a V2 could include more variety of breast appearances in the training set if that's possible.

    LORA
    Wan Video 2.2 I2V-A14B
    by K3NK

    Details

    Downloads
    13,912
    Platform
    CivitAI
    Platform Status
    Available
    Created
    9/30/2025
    Updated
    6/11/2026
    Deleted
    -
    Trigger Words:
    m4crom4sti4

    Files

    wan22-m4crom4sti4-i2v-20epoc-low-k3nk.safetensors

    Mirrors

    HuggingFace (48 mirrors)