Character Codes
Go to versus mode and press [Up], [Down], [Left], [Up], [Down], [Right], [A] - Play as Kuroko (game will restart after the fight ends)
Highlight Random Select and press [Up], [Up], [Down], [Down], [Up], [Down], [Down] - Play as Shiki
Highlight Random Select and press [Down], [Down], [Up], [Up], [Down], [Up], [Up] - Play as Zankuro
Earthquake Code
Play as Charlotte and get a perfect. Then, quickly press [A], [B], [A], [C], [A], [D], [Up], [Down], [Left] to make Earthquake eat chicken.
Unlock Red Blood, Uncensored Violence
Press [A]+[B]+[X]+[Y] at the same time on the difficulty select screen - Unlock Red Blood and uncesored violence.