Who is your favorite character?

[Mirinee]

There's a guide on this page from PSOWorld on who to use/ which missions to do to get which cutscenes. It's confusing at first glance, so read carefully.
Heroside
Darkside

Hope it helps. It's really not obvious how to unlock all the character decks. They should have an indicator the second time to mark off all the quests you've already completed or something. They should give an option to replay cutscenes that you've already viewed so you know which ones you haven't seen and also so that you don't lose track of the plot after not playing for a few months. Ah well, can't have everything. ^^;