>>123798
The Fanbox is somehow still up actually: https://hw731.fanbox.cc/

>>123792
Thanks. Turns out there's more from the same site. For links that won't give mdf files:

Ooinaru Fuyu: https://www.anime-sharing.com/threads/%E2%98%84%EF%B8%8Frelease%E2%98%84%EF%B8%8F-081130-1304-%E6%AF%92%E9%9B%BB%E6%B3%A2%E6%96%B0%E8%81%9E%E7%A4%BE-%E5%A4%A7%E3%81%84%E3%81%AA%E3%82%8B%E5%86%AC.1610112/

Ryuuketsu no Aki: https://www.anime-sharing.com/threads/%E2%98%84%EF%B8%8Frelease%E2%98%84%EF%B8%8F-08xxxx-186052209-%E6%AF%92%E9%9B%BB%E6%B3%A2%E6%96%B0%E8%81%9E%E7%A4%BE-%E6%B5%81%E8%A1%80%E3%81%AE%E7%A7%8B.1607315/