Bakumatsu Roman Daini Tobari cheats and cheat codes for Dreamcast

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.