We have identified an issue regarding cross-compatibility between save files with previous versions of Katawa Shoujo with the Steam version. We have pushed an update which should prevent the game here on Steam from picking up save files from other versions. Please do not try to load save files from previous versions of the game on Steam.
This update also resolves an issue with Steam cloud saves not applying across platforms.
We are looking into a bug where the game does not display properly in fullscreen on certain monitors and are hoping to resolve it soon.
Thanks everyone for playing ദ്ദി ˉ͈̀꒳ˉ͈́ )✧ !!