First I couldn't get rid of the feeling Taki would suddenly drop Kumiko after all or, when they started the performance, that she would make a mistake. I'm glad she didn't, after all that blood spilling practice. The best moment was seeing the always cool Reina get emotional after their success.
I still couldn't care less about Shuuichi, so that scene just felt unnecessary, even if understandable. Kumiko would need a more colourful dude.