Well, here, it becomes a bit harder. I think the easiest way is to edit our standalone patches.
- Download the standalone patch:
https://www.thpatch.net/wiki/Standalone_Patches- Extract it in your game's directory
- In the thcrap directory, remove thcrap_update.dll (otherwise update to the English translations on Touhou Patch Center would overwrite your troll translations).
- In the thcrap\thpatch\lang_en\th11 directory, you have a lot of files. Play with them. All the stXX_XXX.msg.jdiff contains the dialogs. The eXX.msg.jdiff files contains the endings. You also have the BGM names in thcrap\thpatch\lang_en\themes.js
- When you changed something, run th11 (thpatch-en).exe to test it
- When your patch is ready, send th11 (thpatch-en).exe, th11 custom (thpatch-en).exe and the thcrap directory to your friend.