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Emerald Dragon
Cheat mode:
Enter the following code during game play, but not in the combat or status screen. Hold Start and press L + R to display a cheat menu with level up, money, no encounters, and extra save game slot options.
Ending Omake:
Complete all five of casinos (including the "empty" one in the City of the Dead), then finish the game. Allow the credits to end, then wait ten minutes at the MediaWorks logo to view an Omake sequence.