For now I've only uploaded the 4koma in this doujin, since they seem interesting.

Should I upload the rest of the doujin (Explicit, some loli)? I hesitate because Danbooru frowns on whole-doujin uploads...

can you tell us what the doujin is called?

It's called Iromonogatari (色物語), made by the circle Tennenseki (天然石). I downloaded this from part 1 of the C77 doujin batch released by Doujinshi-4U.