I have spent about 3 hours alone on this post, trying to find where it came from, and I've come up empty-handed. I've tried using every single reverse search engine I could find, I've tried looking into the picture's EXIF data, and I've even tried looking very closely at every pixel of the picture for even the slightest hint of an artist's mark/signature, and I've failed.

Perhaps one of you guys can recognize it or give me more tools to find it myself... Take a look: post #1078846

I found something
https://hentaiporns.net/we-bare-bears/we-bare-bears50/

image width suggests source is either tumblr blog that is hidden from search results or furaffinity

TheHuskyK9 said:
I found something
https://hentaiporns.net/we-bare-bears/we-bare-bears50/

I know, I added that just to make myself feel better, but ultimately, I know deep down inside that I failed.

Plus, that's as far as I was able to get.