This code will only work after Edge Master has been released.
Before chooseing your character, highlight him or her and lightly
tap the G button. You will be able to choose which weapon style you
want to use, 1 player, 2 Player, or Edge Master (E.M.).
Play as Unknown Soul:
To play as the Unknown Soul version of your character, hold the
start button when you select him or her. This will make your
character "see through". This code will only work AFTER Edge
Master has been released.