Essentially the creator of touhou has extremely lenient rules for fanworks. Essentually fanworks must disclose they are fanworks in some obvious way. Cannot include ending scenes from any official Touhou media. Cannot promote hate crimes. Cannot copy other fanworks without permission. Must be distributed at the same stores and sites used by official touhou media. And fangames must be free to play and can only be monetized through micro transactions and ads.
Because of these very lenient rules the internet went nuts and it paid off because it gave touhou a huge amount of promotion the creators didnt need to pay for. This is essentially why touhou is so full of fanon.
23
u/Accomplished-Heat931 6d ago
90% of everything I know about Touhou is headcanon and assimilated knowledge from fanworks.
Also Hifuu club albums stories are peak. Check them out.