Five Treasure Box

The album is titled Five Treasure Box due to the members contributing to the lyrics and composition of seven of the ten tracks on the album.[1][2] Guitarist Choi Jong-hoon stated that the band "worked on everything from guitar rift, sound and song genre".[3] The album includes five Korean-language tracks previously recorded in Japanese.[4] Speaking of these tracks, bassist Lee Jae-jin explained that "it was too much of a waste to lock up our songs [in Japan]". The band rewrote the lyrics in Korean and suggested to FNC Entertainment to include them on the album. Drummer Choi Min-hwan explained that the band chose "the best" songs to rewrite, while taking the "album’s mood" into consideration.[2]

On the album jacket photos, each member was pictured with their most "treasured" possessions. Guitarist Choi Jong-hoon was pictured with exercise equipment, lead vocalist Lee Hongki was pictured with his three dogs, bassist Lee Jae-jin was pictured with magazines, comic books, and potato chips, drummer Choi Min-hwan was pictured with a television and a teddy bear, and guitarist Song Seung-hyun was pictured with sheet music and a headset.[5]

Five Treasure Box contains elements of modern, acoustic, and punk rock music.[4] The promotional track "I Wish" was written by Han Seong-ho and composed by Kim Do-hun and Han.[6] Classified as a pop rock song,[3] "I Wish" begins with an acoustic guitar, and the song gradually builds up into the chorus.[4] The band members spoke of disappointment that the song was being used as the promotional single. They expressed understanding in the choice of FNC Entertainment wanting to promote a song with wider appeal, but the band showed preference over the tracks they composed.[3]

F.T. Island first performed a snippet of "I Wish" on September 1, 2012, at their Take Island concert.[7] A music video teaser was revealed on September 6, which featured label mate Hye-jeong from AOA.[8] That same day, a promotional truck playing the music video teaser drove throughout Seoul in order to promote the album.[9] The full music video and the album was released on September 10.[10]

On September 13, F.T. Island began promoting "I Wish" by performing the song, as well as "Let It Go!", on Mnet's M! Countdown.[11] The band also made their comeback performances in the following days with "I Wish" and "Paper Plane" on Korean Broadcasting System's (KBS) Music Bank,[12] performing "I Wish" and "Compass (The Way)" on Munhwa Broadcasting Corporation's (MBC) Show! Music Core,[13] and on Seoul Broadcasting System's (SBS) The Music Trend with "I Wish" and "Life".[14] On September 20, "I Wish" earned its first and only K-Chart win on M! Countdown.[15]

On September 25, F.T. Island performed "Compass", "I Wish", and "Life" on Choi Hwa-jeong's SBS radio show Power Time.[16]

Within the first week of its release, Five Treasure Box sold over 30,000 copies in South Korea.[1] It went on to debut at number one on the Gaon albums chart.[17] The album charted at number three on the Gaon monthly albums chart for September, selling 46,982 copies that month.[18] On the issue dated September 13, 2012, "I Wish" debuted at number 23 on the Billboard Korea K-Pop Hot 100.[19] The following week, it rose to number 13 on said chart,[20] and it peaked at number 12 the week after.[21] On the Gaon singles chart, the song debuted at number eight.[17]