Unlock characters one through fourteen, including Ms. Sunday, Tony Tony Chopper, Red Haired Shanks, and Hawk-Eye Mihawk. Then, use Sanji in Story mode on any difficulty setting. During the ending credits, hold L and press A(2), X, A, Left, A, X, B, A, X, Y, X, A, R(2), Left to unlock Mr. 2 Bon Clay.