Update: Fixed untranslated leftover text and typos.
Manual Translation
Instructions:
1. Buy the game here:
https://www.dlsite.com/pro/dlaf/=/t/s/link/work/aid/SaikeyPtrn/id/VJ010833.html
2. Put the patch2.xp3 file attached to this post inside the root folder of the game.
3. Run the .exe file and enjoy!