2011 single by F.T. Island
"Satisfaction" (stylized as "SATISFACTION") is a song by South Korean rock band F.T. Island. It is their fourth single under Warner Music Japan and seventh single overall in Japan, and is included on their second Japanese studio album Five Treasure Island. The song was written by Junji Ishiwatari and composed by Hiroki Horiko. It was released on April 20, 2011, in three editions: a CD-only edition, and limited editions A and B. The single debuted at number two on the Oricon weekly chart and went on to sell over 43,000 copies in Japan.