F.T. Island (Korean: 에프티 아일랜드 ), Five Treasure Island, or FTI, is a five-member South Korean band. The name F.T. Island stands for 'Five Treasure Island', noting that each of the five members is a treasure of talents of their own. Their debut album, titled "Cheerful Sensibility", was the sixth best-selling album in 2007. Their debut song 'Lovesick' stayed on top of K-Pop charts for 8 consecutive weeks. The official fanclub name is "Primadonna" and the official fanclub color is sunshine yellow; the band's fans carry yellow flags known as "pentasticks".
