>>536451036
21-3 normal. I havn't even thought to try Kotori, I've been using S.Shizuko for repositioning/shielding.

>>53645133
THasumi is my main blue dps, I have Chise at 3 stars, almost 4 because I've been farming her every day. I have Michiru and S.Tsurugi with no investment. My purple students are Casual Sena, Maid Momoi and Momiji. I don't have the materials to invest in Momois skills but I have a bunch of red winter stuff for Momiji if I need to. Sena has good equipment but all her skills are only lvl 3.