CODES
Play as Youko Kurama, Shoujo Genkai and 100% Toguro
In the blank screen after the NAMCO logo, press B, A, B, Y, B, A, B, Y. If you did it right you'll hear a sound. 

In the character select screen, put the cursor in Kurama, Genkai or Toguro and press L or R to see his/her alternative mode.

Skip to the game completion scene
When the screen displays "Namco", press L and R simultaneously and rapidly. It is recommended that you use a controller with the turbo-autofire function.