BROOOOOOOOOOOOOO I spend like 5 hours and couldn't find the option to save the game so I thought it was auto saved, turns out I wasted 5 hours, where is the save button???
The game is powered by Renpy so if you've played other renpy visual novels, you just press escape or it's the 'menu' button at the very bottom of the screen. Renpy has an autosave save feature when you're in the load menu, click on the 'A' for autosave. Hopefully you'll be able to recover your lost progress