Here are some cheats and tips for the game Pretty Soldier Sailor Moon R.
Fight as same character:
Choose the “Action” or “Competition” option
and highlight the “Player-2” selection. Hold L
+ R + Select and press Start. Both players
may now choose the same character. TWO PLAYER CHIBI-USA!–
Two player Chibiusa mode:
Highlight the “Chibiusa” selection, hold L
+ R + Select and press Start. A new menu
will appear.