F.T. Island (Five Treasure Island) is a South Korean rock band formed in 2007, widely recognized as one of the first idol rock bands in Korea. Known for their melodic rock sound, powerful ballads, and impressive instrumental skills, they have achieved popularity across Asia, blending K-rock with J-rock influences and often releasing music in both Korean and Japanese.

F.T. Island collaborated with ONE OK ROCK's Taka on the Japanese single "Primavera", released on April 17, 2015, and again on "My Birthday", released on May 13, 2015. Both collaborations highlight the synergy between Korean and Japanese rock scenes.