Bakumatsu Roman Daini Tobari

Unlock EX mode
Choose Speed (Blue times), after press X(6 times), Left, B(3 times), Right,
X(4 times) at the mode selection screen.

Unlock Kotetsu
Highlight Shingen at the fighter selection screen, then quickly
hit X(5 times), B(10 times), X(2 times).

Unlock Kouryu as playable character:
Highlight Kaede at the fighter selection screen, then quickly
hit X(10 times), B(5 times), X(4 times). If the code is accepted, you should
hear Kaede to speak. Hit Y or A to play with Kouryu.

Unlock Original version of Kaede as playable character:
Highlight Kaede at the fighter selection screen, then quickly
hit X(9 times times), B, X. If the code is accepted, you should hear
Kaede to speak. Hit Y or A to play with original Kaede.

Play on mirror matches
Highlight Akari at the fighter selection screen, then quickly
press X(8 times), B(9 times), and press Kick several times until Akari
speaks.

Unlock Card mini-game at options menu:
Complete on any difficulty level the entire story mode. You can use any
continues as you want.