XnView Software

This feature "browse to next folder" can be turned on(or off), so that you can browse pictures continuously in a folder which contains many subfolders.It's just like the feature "show all files(recursive)" but moreover automatically.This would be convenient for comic books.

This feature is already implemented, but it works only in "browser fullscreen".

To enter browser fullscreen go to browser (file list) and press F11. Other keyboard and mouse shortcuts are configurable.