There is a new opening song starting from this episode. I think this new song is a lot better than the first opening song. Unforunately the ending song is left unchanged. There are lots of spoilers in the new opening, but it definately gives me high hopes for the rest of the series. The first part of the episode wasn’t too interesting since it was pretty much just about Tomoe being mischievous. There seems to be more to Erstin because of her odd behaviour in this episode. Anything that is somehow related to nanomachines seems to concern her. Currently I only have theories pertaining to her situation, but for a definitive answer I will have to wait and see. This episode is a turning point for the series. An army of Slaves fly across the sky at the end of the episode signifying the beginning of the real plot of the series.