Thanks to Yanonako, it has come to my attention that when you Save during choices with Character Buttons, you will be automatically taken to a scene and cannot choose the buttons. For example: (screenshot taken by Yanonako)

And I've just discovered the problem..
You see,  I usually put a pause on the screen using this code: 

$ renpy.pause (1, hard=True) 

Turns out the correct code is:

$ renpy.pause (hard=True)  

That '1' is screwing me over :'D Ren'Py is really strict when it's about coding, so I'm really sorry about this!
I've fixed the problem and uploaded version 1.4.2! If you don't want to re-download the game, the solution I can give you is to save often during daily tasks & save often during character scenes 

Once again, I'm sorry for this blunder of mine m(_ _)m *bows* 
Like in my previous post, your save files should be safe since Ren'Py automatically saved the save files in your PC's %AppData%, but if you can't find your save files, here's the solution:

- Open Bermuda's "saves" folder and copy its content, it's where you've extracted the 1.3 game. For example: "D:\renpy-8.0.3-sdk\Nusantara Bermuda FINALE\game\saves" and copy paste them to your new 1.4 "saves" folder

OR

- Copy the save files and go to "C:\Users\user\AppData\Roaming\RenPy\NusantaraBermuda-1544535329" paste the save files here and you should be able to resume your game!

Thanks again and I hope there will be no more bugs that disturbs your immersive experience--but if you do, please drop by the comments section and tell me!
xoxo,

SweetChiel