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.

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).

• Removed the single trigger tag (mpreg-set) to make the LyCORIS more versatile as a multi-concept model.
  
  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).