Without the vocals, I actually liked the OP, it has a nice beat to it. Not a lot of things explained in this episode here. Where did she get that money from? If she had that kind of inheritance and money from her parents, why couldn't she afford to give away 500 yen (about $5 USD) to Chika? Why did she risk her life saving Yumi-chan when they didn't have a close friendship? It seemed like they were just using Michiru to run their errands.

Aside from that, I really like the animation and style of the characters; they look similar to that of Ouran High School Host Club. I'd like it if they didn't really use jokese during a serious battle like that, it kind of ruins the mood.