The digital version of Giro's Kemoket 6 doujin, which is distributed on their fanbox. The physical release has long since sold out, as well. The cover page isn't actually on Fanbox, it was taken from a post on their twitter page. Page 2 is the banner of the post from the fanbox, which technically is in higher resolution for the same parts that are drawn, but otherwise the original resolution version of the cover was never released digitally (at least onfanbox, who knowss if the regular pixiv page had one but it was deleted at some point). Page 3 is a WIP that was also taken from twitter, included only because it has no title text blocking the character's leg.

Artist's links:
https://twitter.com/girokemo
https://www.pixiv.net/member.php?id=1739433
https://girokemo.fanbox.cc/
https://girokemo.booth.pm/ (the works of the circle the artist is part of is sold here)
https://www.suruga-ya.jp/search?category=&search_word=&adult_s=3&ck=true&inStock=On&person_id=2893185 (physical versions of the books were sold here, but they're all out of stock, no clue if they'll ever re-supply.)