GReeeeN
GReeeeN are J-pop band I have been a fan of for sometime, their music is more on the rock side of J-pop not heavy but certainly not poppy like Arashi. The group is made up of Hide, Navi, 92 and soh all of which have studied dentistry at Ohu University of Fukushima pretty weird history for a pop group if you ask me.
Their most popular song is properly kiseki （キセキ）which was used in the drama Rookies and was ranked at number one on the Billboard Japan Hot 100 singles yearly chart 2008. It later went on to be the best selling full track digital single in Japan.
One interesting fact about GReeeeN is that they keep their identity’s concealed even going as far as having their faces censored in a TV appearance. Stating the reason is to keep their dentistry and musical careers separate, they have however hinted at making an appearance once they have all passed the prefectural examination in dentistry and receive permission from the directors of the hospitals they work for.
GReeeeN – キセキ (kiseki)
Albums
A, Domo, Hajimemashite 2007
A, Domo, Ohisashiburi Desu 2008
Shio, Koshō 2009
Websites
Offical – http://www.greeeen.net/
Fan site – http://fan.lucidify.com/greeeen/
Hoolan 
interesting band name. I like the ole secret identity vibe too.
Not a bad song.
Not a big fan but they have a few good songs. I haven’t listened to them in a while though, gonna have to check out their latest album!