Fight as Kuroko:
Select versus mode. Press Up, Down, Left, Up, Down, Right + A at the character selection screen. REMEMBER: The game will restart after the match has been completed.

Fight as Amakusa:
Select any character and enter versus mode. Lose and save the game. Load the game and select Charlotte with controller two and continue the game. Press Start on controller one in the bonus phase. Player two will transform into Amakusa.