it's crazy how Nana, who everybody thought to be just one of your boring, average blue cure, ended up being a character far more relevant and proactive than Kokoro, who everybody thought as the soon to be fan fave at the start. Kokoro got a great introduction, now she says her catchphrase 10 times per episode and occasionally gets a sad episode (the only good one was the mother's day one), that's it, they don't know what to do with her.

Nana actually gets the plot moving. Good for her seiyuu