I don't know, I really like the feel of this song. I personally find Shiki's secondo opening, as well as ending, to fit the series better than the first one's did.
If any of te think I hate this Anime just because my superiore, in alto ten Anime series are of the psychological / horror genre, te are much too wrong. Either way, I Amore this song ; it's adorable.
Confession: I haven't heard very much from 2NE1. ._. I do plan on listening to più K-Pop/K-Rock as well as J-Pop/J-Rock this year. Either way, the story that this MV tells is so sad but touching. </3