What does the Noble trait does? Cause it doesn't seem to affect prestige gain.
It's your
MC's prestige gain.
So I've been playing the game for a while now, my problem is that I have to save my game after EVERY action I make because the app is constantly closing itself (mostly when I go into the "Girls" interface, "Slave Market" interface or when they're working), whenever this happens there is no traceback.log.
Is there anything useful in one of the log files (traceback.txt, errors.txt, log.txt)? Could be some manifestation of the 'out of memory' issue in relation to your girl packs, since crashing seems to happen when the game is trying to display one of the girl images.
And you say 'app', are you playing the game on a non-PC or non-Windows setup?
Sometimes I get an actual crash that talks about some lines in BK_ini...
...what should I do to play without worrying every second about saving the game and losing progress?
Rollback doesn't really fix such errors.
What you can do is check your girl packs and edit or delete the offending .ini file. There are also some other
ideas you could try to make memory issues less frequent.
So that button has no function?
Well, you can click it and there's a 'click' sound.

Several interface elements are some variety of 'button' without necessarily being a button that
does something. Peculiarities of doing UI in Ren'Py.
Also to whoever involved in developing this game...
That would be Goldo, who is not here on F95.