𝕧𝕖𝕟𝕘𝕖𝕒𝕟𝕔𝕖 𝕚𝕟𝕥𝕠 𝕙𝕠𝕡𝕖
TAV I honestly don't see playing a part in this story, If they do it will be very little. I think they will shine more in DDD2. However, unlocking costumes and stuff would be fun! lol. No I think Sora will be playable through memories or perhaps Sora is dreaming, as he was clearly a sleep before he woke up in Yozoro's world. As for the main canon part of the Game, I think you'll play Riku a bit but most of the time I think you'll actually be playing Kairi probably for the bulk of the canon part of the game.
Well, there are 20 playable characters xD I don't mean the main story but the rhythm game part