I am new and I got a lot of new students in Bluefes but I don't have enough activity reports to level more than 2 of them. Who should I level first out of the following students?
>Neru (School)
>Rio
>Shun
>Hoshino (Swimsuit)
>Hoshino (Battle)
>Hina (Dress)
>Seia

I see that there is a Grand Assault coming up, and then the difficult purple cat for Total Assault. Not sure who is used there.