LF Slime Avatar

A friend of mine found this avatar and want to know where it come from

if you know, please tell us the link for a gumroad or booth
and even better if you have a download link for it, it'll be awesome

Thank you !

Also,
If you have this one : https://booth.pm/en/items/2725133

Would be great !

I believe that first one is just a custom Imeris (could be wrong) with a slime shader (or the slime feature with Poi)