>>542615321
I'm using this team. I think Ui should be better than Mabayu if she was A4+. My Ui is A2 and the lack of SP regen hurts a lot at higher levels.

For 12 and below I did great with Rena, Homura, Ui, Mami, and Doppel Iroha. But that team takes a big bit above 12. Might work even on 20 with an A4+ Ui and Focused Guards.