LF Slime Avatar

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