A heavily modified Simply Love SM5 theme with Touhou stuff in it. I made this theme just to have some cool danmaku girls in the background while dancing. This theme is not intended for public use.
Only the visuals and audios are modified. Scoring and any mostly other stuff will remain the same like the original Simply Love.
Original SLSM5: https://github.com/Simply-Love/Simply-Love-SM5
Download and put this theme in Themes/ folder in your game directory.
Migrate to Save/ and open ThemePrefs.ini, duplicate your old [Simply Love] entries and rename them as [Simply Gensokyo].
Your profile preferences and data will remain the same as you were using the original Simply Love theme.
Only ITGMania has full support including GrooveStats. Other Simply Love compatible Stepmania games do not have proper GrooveStats launcher integration and require you to turn it off or port the GS helper file from your working SL theme.
You can port Scripts/SL-Helpers-GrooveStats.lua from your working Simply Love instance to Simply Gensokyo if you want to use GrooveStats launcher with this theme.
(I have not tested this. I also do not know if there are actually more stuff that is exclusive to ITGMania, mainly network support. I won't fix this issue.)