I present my mpreg model that I made for personal use. It's not perfect but it does a decent job at enhancing existing tags for various prompts related to male pregnancy, inflation, and lactation and such.

I went with LyCORIS over LoRA so it would mix better when combined with style art style LoRAs. The model I trained on is NoobAI XL 1.1 but it works great with Illustrious LoRAs and checkpoints.

Re-uploaded due to being less consistent on comic prompts without a main activation tag on previous version. This version has the same training set but with an additional activation tag (mpreg-set).

V3

This version was also trained on NAI 1.1 but will work great with Illustrious checkpoints/LoRAs.

• I fixed incorrect training settings so this version can now support a higher strength without being too overtrained.

• Trained a concept for obese belly that won't give fat face/thighs/arms (only affects the belly size).

• Tried to add translucent tentacles with fluid transfer (it semi-works but can be hit/miss).
  
  Recommended model strength is 0.7-0.8 to avoid having it overinfluence the style you're going for when combined with style LoRAs.

The concepts that work well include tags like:

• pectoral expansion / breast expansion

• belly expansion / hyper belly inflation

• big belly / hyper belly / obese belly

• male lactation

• hyper pecs

• cross-section / cum inside / cum overflow

• impregnation / male pregnancy

• tentacle in ass / tentacle penetration

• tentacle in mouth + drinking from tentacle

• translucent tentacle + flowing white substance + white substance flowing through tentacle

• disembodied penis / penis in ass / penis in mouth
  
  I tried to train it to work for comic / progression panels (to slight success) but it can be temperamental/generate panels in the wrong order so it may take several attempts to get a decent comic/2koma/3koma/etc.

Specific image examples of various focus tags (at different levels of tag strength) have been included.

The settings used for my generation testing were 4-5 CFG, 20-24 steps, Euler A - Karras on Forge with an adetailer (face_yolov8s).

V2

This version was also trained on NAI 1.1 but will work great with Illustrious checkpoints/LoRAs. I tried to refine the tagging and removed some excess training images that weren't helping much with the consistency of tags. I did try to improve the cross-section so it better resembles cervical-penetration so penetration goes deeper inside.

The concepts that work well include tags like:

• pectoral expansion / breast expansion

• belly expansion / hyper belly inflation

• big belly / hyper belly

• male lactation

• hyper pecs

• cross-section / cum inside / cum overflow

• impregnation / male pregnancy

• tentacle in ass / tentacle penetration

• disembodied penis / penis in ass / penis in mouth
  
  I tried to train it to work for comic / progression panels (to slight success) but it can be temperamental/generate panels in the wrong order so it may take several attempts to get a decent comic/2koma/3koma/etc.

I've included specific image examples of various focus tags at different levels of tag strength.

Recommended model strength is 0.5-0.6 to avoid having it overinfluence the style you're going for when combined with style LoRAs.

The settings used for my generation testing were 3-4 CFG, 20 steps, DPM++ 2M SDE - Karras on Forge with an adetailer (face_yolov8s).

V1

I focused more specifically on generic tags as opposed to unique tags so it would simply enhance existing concepts/make them stand out more.

Those concepts include tags like:

• pectoral expansion / breast expansion

• belly expansion / hyper belly inflation

• big belly / hyper belly

• male lactation

• hyper pecs

• anal cross-section / cum in ass / internal cumshot

• impregnation

• tentacle in ass / tentacle penetration
  
  I tried to train it to work for comic / progression panels (to slight success) but it can be temperamental/generate panels in the wrong order so it may take several attempts to get a decent comic/2koma/3koma/etc.

I've included specific image examples of various focus tags at different levels of tag strength.

Recommended model strength is 0.5-0.6 to avoid having it overinfluence the style you're going for when combined with style LoRAs.

The settings used for my generation testing were 3-4 CFG, 20 steps, DPM++ 2M SDE - Karras on Forge with an adetailer (face_yolov8s).