View the Bomber Prince:
sComplete ten stages in quest mode, then enter the practice room. Place all characters in the hallway, then return to the practice room. The Bomber Prince will appear approximately 50% of the time.

Faster game:
Hold C and press Start at the title screen to begin the game without the special effect sequence.

Bonus levels:
Successfully complete quest mode one time. The "Honey" and "Cotetsu" levels will be selectable.