I'm kind of disappointed in the opening by Stereopony in the same way I was disappointed in their opening for Gundam 00 Second Season. Their music is just too lacking in power and honestly I think belongs as an ending theme. The opening sequence also looks like it belongs in the place of an ending theme. It's not that their music is bad or anything, it's just misused IMO. The ending proper however is Abingdon Boy's School greatness as usual. This time they bring us a ballad akin to the style they used for the Tokyo Magnitude 8.0 intro. It's really cool to see a Japanese band with such a variance in style because it doesn't happen terribly often. They're like the polar opposite of Ali Project.
Since I can't find the videos on youtube I'll just link to
Random Curiousity who has them up