The trailer for Kingdom Hearts: Birth by Sleep featured a lot of new scenes since the one shown last year. To recap what's known so far, the PSP game is somewhat of a prequel and it takes place before Sora and Riku's adventures in Kingdom Hearts. The story revolves around three Keyblade apprentices named Terra, Ventus, and Aqua, and a Keyblade master known as Master Xehanort.
Terra is a brown haired youngster who looks a bit like Zack from FFVII. Ventus (who's abbreviated as Ven) is a blond boy who strongly resembles Roxas from Kingdom Hearts II. Aqua is a girl with short blue hair and in this new trailer, she was wearing a relatively sporty outfit with what seemed to be short black tights and knee socks.