Rave Master

Reina:
Press Up(2), Down(2), Left, Right, Left, Right, B, A at the title screen. A voice will confirm correct code entry.
arhwi syuhei c, hf ebowhs.

Alternate costumes:
Successfully complete 1 On 3 mode under the hard difficulty setting as Elie, Haru, or Musica to unlock an alternate costume and portrait for that character.

1 On 2 Free mode:
Successfully complete all storylines in story mode.

1 On 3 Free mode:
Unlock all bonus characters and successfully complete free mode with them.

Story Edit mode:
Successfully complete Story mode with each character.

Round calls:
Successfully complete 1 On 2 Free mode to unlock the round call for the character that was played.