Welcome to grabby realistic tentacles! This started out because I wanted realistic images of tentacle porn, and turned into a three-month-long personal project to make a LoRA that could satisfy every tentacle kink I personally have. Hopefully it also satisfies some of yours! This LoRA is made from 2205 hand-labelled training images, with a lot of diversity.

Some recommendations, it seems to work just fine with most realistic checkpoints, but it also makes semirealistic checkpoints start to look real, and anime checkpoints to look semirealistic. But, if you don't want that, and you just want it to "understand" some concepts, try dialing the strength way down, to like 0.2, because it seems that at a very low strength, it will still mostly obey your prompt, but not dramatically shift the realism.