Save at scene just before crash.
When I can I'll check the scripts, although I tried overwriting the Arc00.dat file with the one I attached, which has the font size edited to reduce it, and at least in my copy the game doesn't crash after that scene that your screenshot shows, after loading the save03.dat you attached. While it does crash leaving the Arc00.dat, with the original font size.
But loading the save03.dat that you attached in my copy of the game, after passing that scene where it crashes, after a few more screens the credits of the game appear, leaving the Arc01.dat and Arc04.dat files of this english translation, or also overwriting them with the Arc01.dat and Arc04.dat files with the original texts in japanese, which contains the arukazoku.iso image.
So it seems that because of some option selected before, the path stored in that save03.dat ends after a few more screens after the one where it crashes, and when a path ends because of some choice made by the player, the game credits appear and then it returns to the main menu. And apparently you have to change some option selected before, to go through another route with a different ending.
Leaving the Arc00.dat file (with the original font size):
game crashes and exit to desktop.
Replacing the Arc00.dat file with the one in the attachment (which has the font size edited to reduce it from 29 to 22):
the game path stored in that save03.dat ends after a few screens, displaying the credits and returning to the main menu.