I think all of them are Kai-II, judging by Sendai's arm warmers.
Nah, I'm sure that Sendai isn't a Kai Ni here because she doesn't have: -fingerless elbow gloves -sleeveless serafuku -and the most important, the scarf
Jintsuu-chanSendaiJintsuuI'm okay with Naka-chan too!Sendai-neesamaNaka-chan♡JintsuuNaka-chanNaka-chan is going to vote for Naka-chan!☆T-Then I'll vote for Naka-chan as well...Naka-chanSendai-chanThe first Sendai-class general election shaaall begin!