First page published: https://www.furaffinity.net/view/37551149/ (posted Aug 3, 2020)
Last page published: https://www.furaffinity.net/view/37584940/ (posted Aug 5, 2020)

First comic with these three characters. And yes, the comic is indeed a mix of grayscale and colored pages.

A variant set published afterwards introduces the characters and revealed their names and other details: https://e-hentai.org/g/3329233/0018d56518/

Lasty a larger comic with these characters has been published: https://e-hentai.org/g/3329237/cb0e7ca9a7/

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Artist's other sites: https://linktr.ee/fullpurp