I recently stumbled across this song today and thought it was really good. I can’t read the name, but it’s titled “Tada Rin Toshite”. The album it belongs to is called Starry Sky Logic. It got me interested enough to look up more songs StudioK2. I can’t find anymore songs from the same album though, which is a shame. I’m really interested in hearing the other songs since this one was so well done. It also has a pretty picture. StudioK2 did some decent touhou songs, but there’s so many versions of the Touhou songs that it gets tiring after a while. It’s also hard to believe this is fan-made. It’s from C73 which is the 73rd comiket convention. I had no idea music like this was sold there, I only know about hentai doujins from Comiket because of reading Genshiken.