I think it's confirmed that all the voice actors and characters will appear in the first season of the anime and will have some lines. I admit I was expecting this. After all, it's an adaptation of the game, and they'll want all the characters to appear in the anime so fans can see their favorite characters. Which I guess means there will be new scenes that aren't in the game, right? I'm curious about the possible new scenes in the anime; I'd love for there to be some vignettes.