Mireille still the best! Will the celebration after the action really be true?

I wonder will there be more Li in the future or only just the 7 Lis in the codex we can have in the whole game. Also, will there have side characters who are not in the codex to interact with mc?

Personally I think the update of part c is kind of unbalance when it compares to part a and b. Part a tell the background of the game and part b have the story progess, but part c is only showing one more team member and chat with one of the Li. Kind of odd about that.