Newfag here, I need help with the volume 3 boss fight (yes, that one). I tried copying a comp I saw on the web, but it involved Serika, and I don't have her yet, but I have girls like Shun and Mutsuki, who seem to be equivalent to her? I dunno.
Should this comp work in theory if I level them a couple more levels, or am I doing something wrong? Managed to give Tsubaki a T4 bag that gives her some sustain, Asuna has T4 gloves and Mutsuki has a T4 hat, all other equipment is either T2 or T3.