This is an experimental LoRA trained with the r34 tag "embedded_penetrable_sex_toy" in mind. It's pretty much a Proof Of Concept than a stable and user friendly LoRA to use, but I still hope you can have a good time trying it for yourself.
Even with a very small dataset, it do work with realistic and furry style.

For the Strength of this LoRA, it seem to work fine with 1, but I would recommend trying lowers values and work around trigger word to adjust the result

For all versions

The keyword is 'embedded_penetrable_sex_toy' but you can use specific keyword style like :

• 'human, sexdoll,' for a human character

• 'humanoid, robot girl, sexbot, mechanical, mechanical body,' for a robotic character, with a more raw mechanical interior

• 'robot furry, anthro, sexfurry,' to help furry and smoother skin generation

• 'robot furry, anthro, sexfnaf,' for a mechanical and rounder furry result, with more robotic attributes

For the color of the internal sextoy, you can use 'artificial vagina, <COLOR> fleshlight,' and custom it.

For Illustrious V2.0

There is different style of belly transformations, those are :

• 'inside view, mechanical body, womb window' : small womb window

• 'internal view, open body, exposed mechanical body, robotic body,' : larger window

• 'x-ray, inside view, see-through, see-through womb, transparent body, translucent body,' : largest internal exposition, you may want to use 'metallic skeleton' to increase the effect

In this last version the internal sextoy texture can be modified like so :

• 'solid fleshlight' : no texture visible, only rigs on surface

• 'transparent fleshlight' : visible inside texture

• 'see-through fleshlight' : fully clear internal texture

To increase the robotic aspect you can change weight of this new trigger word :

• 'grey metallic skeleton, shiny metallic skeleton' : chromed internal structure

• '([light grey|grey|dark grey|black] metallic skeleton:0.7), translucent body part,' : all available nuance for the internal structure