The two singles for the opening and ending are out know:
Opening: Nobodyknows+ - Hero's Come Back!!!
http://youtube.com/watch?v=99xWMZmSlOk
Ending: HOME MADE KAZOKU - Nagareboshi Shooting Star
http://www.youtube.com/watch?v=3jAhzZX5fNI
Bonus: If you didnt notice, they updated the opening. Change a lot of stuff in it.
http://www.youtube.com/watch?v=-7oThx52psQ