Highlight the "Easy" difficulty option, then repeatedly tap Left until "Very Easy" is
displayed.
Fight as Ryumaou:
Successfully complete the Ryumaou tournament.
Fight as Bokuchin:
Defeat Bokuchin during the game.
Harder difficulty level:
Highlight the "Hard" difficulty option, then repeatedly tap Right until "Very Hard" is
displayed.
Platinum fighters:
Select "SD Hiryu" mode and fight in the circuit. Defeat a platinum character to earn a
medal. The platinum characters will be playable after all ten medals have been
collected.
Ryumaou tournament:
Earn nine medals to play in the Ryumaou tournament.