I have finished the show and after the 50% mark, the show really picked up. The plots of the first half were very un-interesting, excepting the first few episodes. Shizumu seemed to play nearly no role in the first half after the first few intro episodes
. I disliked both ED sequences and their songs, and the 2nd OP sequence was WIN...this is what it should have been about...the sequence clearly showed what the series was about and had the perfect song to go with it.