In what year was the album “Best Of Kat-Tun” released by Kat-tun?

In what year was the album “Best Of Kat-Tun” released by Kat-tun?: The album “Best Of Kat-Tun” was released in 2006 by Kat-tun, featuring 15 tracks.
What is the most successful song from the album “Best Of Kat-Tun” by Kat-tun?: “Real Face#1” is the biggest hit from the album “Best Of Kat-Tun” by Kat-tun.

Other artists of J-Pop/J-Rock