Hmmm, the OP song caught my interest when I watched it in the first episode, so I just gave the full version a listen and I am pleased.~
It's sung in English which I appreciate very much. I wish they did this more often. Then I'd probably be more inclined to listen to OP songs.
I really liked the first season's OP song, and while that one was longer, it was more like a mix of songs than just one, but much more impressive overall. This one, despite staying the same for the entirety didn't really live up to it's predecessor.
It's still a good and catchy song though, and it's now on my MP3 player.~