Okay, as promised. About 東方奇闘劇 3, I don't need to post anything as it has been archived on the Internet Archive already and there's a full DVD ISO there. You can also find 東方奇闘劇2- Supreme Duels as a DVD ISO, so the best imaginable quality (compared to typical late-2000s/early-2010s potato uploads). For those who don't know about them (or people stumbling across the post via a search engine), they were animated works made by AQUA STYLE mimicking game cutscenes. They also featured very nice voice acting.
東方見聞録 by circle FRAGILE ONLINE, released in 2004 (DVD authoring date: 22nd of June 2004). This thing is 20 years old! I'm offering a full DVD ISO. I wasn't aware but this circle seems to be Taiwanese. There are multiple segments consisting in a series of illustrations with dialogue at the bottom. The first segment is narrated by a male Taiwanese voice-over (with a funny distortion in the audio). There's one segment called Luna Dial which reminds of those Touhou Soccer animated shots (I haven't checked if they were made by the same artist or not) that has very poor video quality. And no, this is not due to the limitations of DVD (bitrate is a steady 7Mbps throughout the whole thing), but they probably had a very low quality asset to begin with (or their MPEG2 encoder was very poor).
Not sure if we have the first Touhou animated doujin release here (it's only 2 years after the official release of Touhou 06), but it is a nice piece of history nonetheless.
Some very keen observers will notice the weird scaling artifacts on the video, when watched on a regular modern display. This is because the whole thing was produced at a resolution of 640x480 then loosely scaled using nearest neighbour to the standard 720x480 of NTSC DVDs (you never want to do that). Scaling it back to 640x480 using nearest neighbour will give you the correct picture back.