How do you get Sasuke akatsuki in storm 2?

To play as him in story mode, you have to answer all letters (?) until you get one about Killer Bee, Jinchuriki of the Eight Tails from the Village Hidden in the Clouds. Then you get the bonus Fragment Chapter. In this you get 2 fights:

1.) Taka Sasuke vs Killer Bee

2.) Taka Sasuke vs Full Eight Tails Killer Bee

To get him for other battles, do all the Curse Dolls, beat the Curse Doll Master, & get enough SP. And I think you need to beat Curse Dolls to get him in Story Mode (?)