How do you unlock the card summoned skull in the game yu-gi-oh duelist of the roses?

i dont know. i asked the question. but what i do know is if you go to google and type in Yu-Gi-Oh duelist of the roses cheats you can see if there is a passWord toget summoned skull. if they give you the passWord to get summoned skull reply back to me and tell me thr code or the passWord.