Sheathes seem are a difficult concept for Illustrious-based models to grasp, even for variants especially optimized for generating furry art, so this LORA is going up here on Tungsten to help out with that. As the title implies, it's meant for use with Illustrious and it's derivatives (sheathes seem pretty easy for SD and Pony based models); whether it works with any other types of models is unknown to me, and not my problem to find out.

As you can see from the examples, it works well with anthros and ferals alike, but taurs seem to always end up with two sets of genitals when the sheathes LORA is used (though if that's what you're looking for, then you're in luck). The following tags work with this LORA;

Keyword: sheath

Suggested tag: fully_sheathed

-or-

Suggested tag: penis tip

(use one of the suggested tags if you don't want to depict a full erection; it's kind of obvious, but you can't use both suggested tags simultaneously to good effect, as they contradict one another)

I did not create this model. The original was posted by bial in their CivitAI gallery, which you may find here;

https://civitai.com/models/1342347/sheathes-for-illustrious