u/Kitchen-Conclusion76

I have a team (the one on the photo) and I want 2 characters of different personality. I really want to and Erpin with Naia but I think that Epica and Ui will work better. I still really do want to add Erpin to team. Will these two combos of characters make a massive difference.

I started the game not long ago and obtained an Aya I heard she is meta and has cool design but I have no idea on how to build teams in this game. Are any of these characters a good teammate for Aya?