Applocal, and you need to direct the patch to your Concealed the Conclusion folder, which has the th_dnh and MANUAL folders inside. You may need to run it more than once, and after it's done it will only say that it is R2.00 in-game.
Also, the Help Me Eirin forum might have been a better place to put this topic.
Thank you. I think my MANUAL folder was removed and I didn't think to use Applocale.
And yes, I thought about it, but CtC isn't an official game. However, if I thought about it, I saw topics for touhou soccer in there, so...
EDIT: Okay, so I can't find my MANUAL folder, and on top of that I don't have a th_dnh folder either, just a th_dnh.exe (danmakufu) Where should those two folders be? In the script folder, or in the same one th_dnh.exe is?