Complete the game without losing a battle. Go to the title screen and press Up, X, Down, X, Left, Y, Right, Y, Up, A, Down, A, Left, B, Right, B. A sound will confirm correct code entry. When you start a new game, a new sub-chapter will be available for play, called ‘Starry Skies’. You will be able to battle as the three Sailor Stars, and a mysterious girl will be introduced.
Hold A on controller two then press Up(2), Down(2), Left(2), Right(2), Up(2), Down(2), Left(2), Right(2), Up, Down, Left, Right, Up, Down, Left, Right, B, X, L, R on controller one. You will start the game with level 100 characters and with stats at 255.
Level 16 Senshi:
Hold X at the title screen, then start a new game to have Senshi at level 16.