Is dual_persona tag really appropriate to the post? It is not confirmed yet that the serval voiced by Ozaki Yuka (called Serval-chan ) and the one voiced by Nonaka Ai (simply called Serval ) are exactly same characters, and neither are Kaban and Mirai.
I wasn't too sure if I should have put it either, but considering how Serval responded in episode 10, I felt maybe they're two separate character in the show.