Today, Dan-i Dojo mode was announced and will be releasing tomorrow to give players more of a challenge. The mode is accessed through the song select screen for banapassport card holders and certain conditions are applied to each song in order to pass, and they can get pretty tough. Players can choose any course freely between Shokyu and Juudan at first, but to unlock ranks higher than Juudan, you must clear the course below it. Check out the gallery below on each song requirement and how to access this mode.
Check out the official Facebook post for more information.