Since v0.5 currently has many bugs that can't be fixed immediately, I've prepared full save files spanning from v0.2 to v0.5. If you've completed v0.4, you can start with the save file named '0.4'. While this won't completely eliminate all current bugs, it should help avoid many potential issues – especially the day-looping bug. I truly apologize for the inconvenience, everyone~
https://pixeldrain.com/u/boP62G36
If you encounter issues unlocking the Gallery, you can use this file to unlock all scenes. Simply drop this file into the 'game' folder and replace the existing file.