Hello everyone, I finally attempted to overcome my legendary laziness.
Firstly, I would like to thank anyone who posted in this topic. This is a true goldmine!
I'm also glad my previous contributions on /jp (yes, post 33725346 on thread 33578796 was me) proved useful to the thread and actually helped Denist make his lost media video.
Now about [東方] ハルノカケラ by シオビ, I swear I saw the original source posted on post 1 once. Anyway, this was originally posted on a BBS (see post 57), and its download link was thankfully saved by the Wayback Machine. This is actually the original source, before being uploaded to Nico.
The reasons I'm posting are in fact the following:
I'd like to share another very recent meltdown from Japanese MMDer aja. They have been active from 2010 up to 2022 (with a long hiatus between 2014 and 2021). Just like with たぴこ, this is genuinely one of those cases where you really wish the author would never come back rather than do that. While their work were nothing extraordinary, they were one of the very first into making Touhou MMD starting from 2011. This is what their Nico profile looked like (the account has been nuked). Unfortunately, I only saved a few videos, as I was only interested in their (not so bad) 幻想闘演目 MMD drama series. 4 or so episodes were produced with a presumably lost episode (due to HDD failure) resurfaced in 2021. If anyone has the rest (which is very unlikely), please share. Meanwhile, this is what I saved.