Personally, I think Rihoko is going to be the most lovable one
Silly , goofy , and airheaded. I'm sure she has a head on her shoulders though. We just aren't gonna see it until her arc. So sweet too. Asking Junichi if he has a fever and such. I do enjoy her cameos when Junichi is trying to do something though. Maybe it's just that I love her music to death. But, there's so much that separates her from the others.
Childhood Friend
A uhhh... different body build than most
Definantly clumsiest of the 6 :P