What do clean Touhou installs look like?
I couldn't find a full clean version of the game but you can find the trial version on ZUN's website.
http://www16.big.or.jp/~zun/html/th06.html
It has a folder with html and images of the manual but other than a trial information text file and the missing BGM folder, it seems like it just has the Japanese names of the config, DAT and main exe filew.
I would say the full vanilla version would have
- BGM folder with WAV files
- Manual Folder
- custom.exe and custom.txt
- Japanese version of the game exe, DAT and cfg file. When I got these they all started with ìgûéï¢ which is incorrectly encoded text. The translated version has th06 instead so it's probably the Japanese name of EoSD.
If you really want to see what the full game has, you can try and import a copy or something.