Flying Dragon 

Play as Bokuchin 
Defeat Bokuchin to unlock him as a playable character.

Rayomau tournament 
Earn nine medals to play in the Rayomau tournament.

Play as Ryumaou 
Complete the Ryumaou tournament.

Platinum fighters 
Select "SD Hiryu" mode and fight in the circuit. Then, defeat a platinum character to earn a medal. The platinum characters will be playable after all ten medals have been collected.

Easier difficulty level 
Highlight the "Easy" difficulty option, then repeatedly tap Left until "Very Easy" is displayed.

Harder difficulty level 
Highlight the "Hard" difficulty option, then repeatedly tap Right until "Very Hard" is displayed.