I was thinking, if I tend to create fanart or fanfiction of anime that I like, I want to be sure that I can reasonably share it with others. One of the gold standards of such permissive engagement is Touhou Project. Which animes do you think are closest to Touhou in that sense? Here’s a few that came to mind after some initial research, based on doujin prevalence. (also in MAL interest stack form)
Kancolle
Azur Lane
Project Sekai Movie (Hatsune Miku)
Fate/Zero
Idolmaster
Love Live
Hololive Summer 2022 (Hololive)
Kemono Friends
Madoka Magica
Revue Starlight
Is This Order a Rabbit?
Not in the stack, but I do remember Umamusume has well-defined guidelines.


Major titles from Cygames and Mihoyo?
And to lesser degree, Princess Connect!
I see a pattern here…
sigh, it’s all gacha games with a lot of waifu material
husbando
I remember a short period when Touken Ranbu WAS super popular.
Gotta have everything for everyone to succeed I guess.
Non games (honestly I don’t see fanart of these as often compare to gacha games)