F.T. Island (Korean: 에프티 아일랜드) is also known as Five Treasure Island, or FTI, is the name of the band . The name F.T. Island stands for 'Five Treasure Island', each of the five members being a treasure. The band's official color is sunshine yellow & their debut album, Cheerful Sensibility (7th June), made the sixth best-selling album of 2007 in South Korea. Their official fanclub is "Primadonna".