So if you head to this location in your files C:\Users\(the name of your user)\AppData\Local\Komadori_Inn_0_5_demo. You can find your save files there. Find and edit these:
Fuy Inti=""
Fuy Inti Exp=""
Fuy Bar Filled=""
Make it whatever number you want, and you can now "progress" your game. Just a heads up,... There is no update yet, as the developer has not provided one. But at least you can complete different quests and rewatch scenes for Fuyuko.
Hopefully the devs won't change anything for this as it can help many players progress the game without any bugs or hangs. Just like a certain game that I played....