vanyk

Another thing that many fans do not see is that except official works there are also officially approved works. Official works is everything made by ZUN himself what is considered to be official. Officially approved works are the works that were officially allowed by ZUN to be made (for example works by companies, otherwise they are violating the guideline) and got official licence. The key point here here is that approval is required according to the rules.

Everything else, what is not official or officially approved, are derivative works. They can be made as long they are within the rules. The only complicated part here are official works in which some parts were not made by ZUN (for example art in official manga). These works are official, the parts not by ZUN are also official (if they are considered official (for example most manga in BAiJR is unofficial, but BAiJR is official work)), but as ZUN gives a fair amount of freedom (with some supervision) for creators, the parts which were not specified by ZUN (for example characters' designs and their height) may be considered as officially allowed (so most calculations about heights of characters (and sizes of objects) in manga does not make much sense, I am sorry Lotus Eaters translators).

What are actual difference between officially approved and derivative works? If we will ignore things like financial resources and requirement of approval and we will not place officially approved works higher or lower than derivative works then there are no difference between them. Officially approved works have more resources (because they are made by companies) and they require approval by ZUN, while derivative works do not need this. All officially approved works have licence by ZUN, while derivative works don't need it, but some of them may get licence too (for example if they are published in official magazines).
Official works are separated from officially approved and derivative works.

So not everything that has licence is official, and officially approved ≠ official.

Some Japanese discussion about that (Google translated):

Hello. I want to share some thoughts I have after observing Japanese Touhou community for some time. I see that a lot of non-Japanese fans do not see some things the same way as Japanese fans see it. So, I think it is important to share such notices to reduce the amount of misunderstandings.

It is important to understand that a lot of Japanese people (and ZUN) understand Copyright and respect not in the same way Western people see it, and there are a lot of misunderstandings because of that (and there may be problems because of that). That leads to a big number of unspoken rules (except official guideline) which most Japanese fans understand, but Western fans do not know about them. Examples:
1. Raising money before work's release (for example crowdfunding) is still a no-no in doujin sphere even now. It somewhat changed after COVID (because some doujin circles and even doujin events realized that they need to find a way to survive), so it is not that big no-no now. What about Touhou? In 2014 and 2015 there were 2 attempts to make fan content with crowdfunding. What important to note that many Japanese fans weren't supporting them (especially after ZUN's interview in 2014 (after first attempt) and Ruw's comments in 2015 (during the second one)). For a long time nobody attempted to do it again but after COVID some big circles contacted ZUN directly and he allowed them to do the crowdfunding campaigns. After that ZUN changed this unspoken rule to actual rule: crowdfunding is not very welcome, but if you really want to do it, you need to get ZUN's allowance.
2. If you want to make a new strong, solid or big (and the border of this is very vague) fanwork based on another (fan)work (for example fan album), you cannot steal art and music from the original work (examples: a lot of unreleased scripts (a few examples) (a lot of them were unreleased because of that), TCL, RE: TLC)
3. Most unofficial uploads of official Touhou music and arranges (and doujinshi and paid fan games download links) on Youtube or other sites are considered as piracy (you should ask for allowance from doujin circles, or they may DMCA you (a lot of content from Youtube disappeared because of that (some of them, they uploaded vocal arranges of Touhou songs))) (Also, Japanese fans were surprised when ZUN said that he listened to them to refresh his memory of some his old works (first of all they were surprised that ZUN cannot remember everything, next they were surprised that ZUN listen to pirate uploads of his music)).

Also about AI. There is no strict unspoken rule about that. I have covered that before, TL;DR: ZUN don't like AI, but you can use it in your fanworks (even for doujin events). But a lot of Japanese fans don't really like AI.

Also there may be some more unspoken rules I don't know or I have forgot about.

For a lot of Western fans such unspoken rules are strange and weird, they are not in the guideline, but for many Japanese fans such rules are natural. There are also some other strange official limitations (thanks to Ruw, and maybe ZUN), but they are well-known for fan content creators because they are in guideline.

Touhou Vote Questionnaire statistics:

Popularity of characters from UDoALG:
Enoko - 111
Biten - 110
Chiyari - 97
Zanmu - 87
Hisami - 81

Popularity of OST from Taboo Japan Disentanglement:
Dawn Breaks on Tanabatazaka - 214
Tinkerbell of Inequality - 163
Mugen Noh ~ Taboo Marionette - 200
The Lonely Road of Hitachi - 250
Ghosts Exist Even When It's Not Night - 149

 Boost of Akyuu's popularity is already a meme:

Touhou Mystia's Izakaya anime was announced.

Official announcement:

(bad) Translation:

The visual publicity map of the animation of the Mystia's Izakaya mentioned earlier was announced.
Preparations have begun in all aspects, let's see if we can prepare more things before the big festival. Doujin animation, not commercial animation;
An episode may be about 15 minutes, excluding OP and ED;
Slice of life style, relaxed and funny atmosphere;
I will prepare daily matching (there are good daily matching partners), and I don't have a particularly good idea for the middle matching, so I will take a look at the situation for the time being;
Do one episode first, and then do the next episode according to the income situation. If the situation is good, I will continue to do it. If the current episode loses more harm, that's it.
To be honest, please lower your expectations first to have a better experience.

Other recent announcements:
https://www.bilibili.com/opus/965841731502211081
https://tieba.baidu.com/p/9131987565

Reaction: https://www.bilibili.com/video/BV1gLeueWEZg

Old announcements:
https://www.bilibili.com/opus/927252910636531721?spm_id_from=333.999.0.0 (+ concept arts)

I am a Slowpoke, but what has happened to Roka Enzaki? She deleted all her Touhou styled music and deleted her Twitter account.