EDIT: Good grief, I'm an idiot... I forgot... Togainu no Chi has the option to save "custom descriptions" of save files. This causes errors in Windows 8. You have to turn off this setting from the options. You cannot load any save file saved with this option turned on, but it can be turned off and you can save then afterwards.
Either way, what I mention below is a good resource for other people who may experience issues and need some ideas. Owf. Sorry about that!
Alright, looks like the file-system is spot-on. It's the same as mine. It might be an issue with some System Data, or the Registry savings for the options.
Use the Windows Uninstaller to remove the game fully. Make sure to move the TnC folder from your Documents folder back to it's original install location first, and fully delete the SAVE folder.
Head the Control Panel to goto the "Programs and Features" section. You seem like you know your way around Windows 8, but in case someone else reads this forum post, I'll post the instructions for them. ^_^
Afterwards, click on Programs > Programs and Features and find Togainu no Chi (It should be at the very bottom of the list if it was installed correctly.)To open Control Panel
- Open Control Panel by swiping in from the right edge of the screen, tapping Search (or if you're using a mouse, pointing to the upper-right corner of the screen, moving the mouse pointer down, and then clicking Search), entering Control Panel in the search box, and then tapping or clicking Control Panel.
Control Panel
Control Panel includes some additional settings that you might use less often, such as customizing the desktop.
tnc_unin.png (Like this)
Using this method will also remove Registry options that may have been corrupt (you never know...).
Once it's un-installed, re-install a fresh copy of the Japanese TnC (No English Patch yet!) into C:\Games\NitroplusCHiRAL\, for example. The Documents folder also has read/write issues in Windows. It should never be used to install games. Choose a location for the game that is NOT in the C:\Windows\, C:\Program Files\ (Or C:\Program Files (x86)\), C:\Users\, C:\Documents and Settings\ or C:\temp\.
Run just the Japanese version of the game and try to Save/Load. Please let me know how that works.
Also, this is purely for curiosity as I encountered an issue once before... Are you using an Eastern version of Windows 8? Like one that uses a "Right to Left" reading method like Israeli, or other language variants? I know another issue who had a Windows 8 version that was from around there, and their User name for their Windows login was in a different language and it caused all sorts of odd problems... Good luck! ^_^