Then there are individual character packs, like Lyn's from Blazing Sword. She has her own story, several chapters, and her own interactions with the main character, who is a tactician with a mysterious origin (deeply related to the story of Kakusei, which I will
not spoil). And Lyn thinks she recognizes the tactician, and you can actually in-game-canon it that its the same tactician from Blazing Swords (you can also tell her she's wrong and set it up as a separate tactician if you like), and the two can continue their adventures/friendship (and, if I've read right, even possible romance). That's just awesome.