It's the ending to a new Jdrama with Kamenashi Kazuya in it from the JPOP group Kat Tun <3 Anyway it's a song called "Love yourself" by Kat Tun I LOVE IT! XD This is the ending them to the show :O it's so sexyyyy
http://www.youtube.com/watch?v=lY0iU_22X_g