Ven put his heart in Soras body in BBS, So when Sora unlocked his heart with the keyblade in KH1 to return Kairi, Vens heart was returned. And when a nobody and heartless die, the original person returns. Which explains Why ven and terra are there at the secret ending of BBS which takes place a year after KHII. Also Aqua is with Ansem the Wise. So now everyones back alive. But so is Master Xehanort..
Ven put his heart in Soras body in BBS, So when Sora unlocked his heart with the keyblade in KH1 to return Kairi, Vens heart was returned. And when a nobody and heartless die, the original person returns. Which explains Why ven and terra are there at the secret ending of BBS which takes place a year after KHII. Also Aqua is with Ansem the Wise. So now everyones back alive. But so is Master Xehanort..