Question: What South Korean singer-songwriter, actor, writer, and fashion designer, was in the rock band F.T. Island that released their 5th album The Mood?
Context: Grown-Up is the fourth mini-album by South Korean rock band F.T. Island.  It was released in South Korea on January 31, 2012, under FNC Music and distributed by Mnet Media.  Filled with slow-tempo rock ballads, the album illustrated the musical growth of the band.  Upon its release, the album and its single "Severely" (Korean: 지독하게 ) topped several music charts.  The album debuted at number one on Gaon's weekly album chart and sold-out its initial 50,000 physically produced copies in ten days.  The single peaked at number three on Gaon's weekly singles chart and earned F.T. Island several music television program awards, including three consecutive wins—dubbed a "Triple Crown"—on Joongang Tongyang Broadcasting Company's (jTBC) "Music on Top". Five Treasure Box is the fourth studio album by South Korean rock band F.T. Island.  It was released in South Korea on September 10, 2012, under FNC Entertainment and distributed by Mnet Media.  Being the band's first studio album in three years, the title of the album reflects the "treasure" of the songs on the album, where they contributed to seven of the ten tracks on the album by songwriting or composition.  The album sold over 30,000 copies in its first week and debuted at number one on the weekly Gaon albums chart.  The single "I Wish" has peaked at number eight on the weekly Gaon singles chart and earned F.T. Island one K-Chart win on Mnet's music television program "M!  Countdown". Cheerful Sensibility is the first studio album by South Korean band F.T. Island, released on 5 June 2007.  The album contains 13 songs divided into two sections: "Emotional Chapter" consists of rock ballads, while "F.T. Island Chapter" is made up of pop-rock songs written by Japanese composers.  The album sold 79,000 copies and became the sixth most sold album of the year in South Korea.  It was re-released on 3 December by the title "The Refreshment", with three new songs.  The package included a Music 2.0 program, which enabled changes to the levels of vocals and instruments.  It sold 25,724 copies. Lee Hong-gi (; ] ; Japanese:イ•ホンギ) is a South Korean singer-songwriter, actor, writer, and fashion designer.  He is best known for his singing abilities and being the main singer of the South Korean rock band F.T. Island.  Lee released his first solo extended play "FM302" in South Korea on 18 November 2015 and his Japanese album "AM302" on 9 December 2015. Lee Jae-jin (Hangul: 이재진 ; Hanja: 李在真 ; Japanese:イ•ジェジン born December 17, 1991) is a South Korean musician and actor.  He is a member of rock band F.T. Island, where he serves as the bassist and 2nd vocalist.  He has also contributed to F.T. Island's body of work with several compositions of his own. 5...GO is an album by South Korean rock band F.T. Island.  It was released on 13 May 2015.  The album was released to celebrate the band's fifth anniversary in Japan.  The title track "Primavera" is a collaboration with Japanese rock singer Takahiro Moriuchi from One Ok Rock. 20 [Twenty] (stylized as 20 [twenty]) is the third studio album released in Japan by South Korean rock band F.T. Island.  It is their second studio album under Warner Music Japan and third studio album overall in the country.  Recorded in South Korea in the midst of the band's promotions there, the band aimed to make "20 [Twenty]" their most mature album to date.  The album spawned three singles prior to its release—"Let It Go! ", "Distance", and "Neverland"—which all charted within the top ten spots of the weekly Oricon singles chart. Prologue of F.T. Island: Soyogi is the first Japanese EP released by South Korean rock band F.T. Island on 7 June, 2008.  Two of the songs, "Primadonna" and "F.T. Island" are Japanese-language versions of previously released Korean songs, while "Always Be Mine" is the English-language version of "First Kiss".  Music videos were released to "Soyogi" and "Friendship".  An extended version was later released as their first Japanese studio album, "Japan Special Album Vol.  1". Choi Jong-hoon (Korean: 최종훈; hanja: 崔鐘訓) ] ; Japanese: チェ•ジョンフン; born March 7, 1990) is a South Korean guitarist, musician and actor.  He is the leader of the South Korean rock band F.T. Island, where he serves as the lead guitarist, keyboardist, lyricist and composer. The Mood is the 5th mini album by South Korean rock band F.T. Island.  It was released in South Korea on November 18, 2013 by FNC Music and distributed by Mnet Media.  It features the song “Madly,” a rock ballad.  Members Choi Jong-hoon, Lee Jae-jin, and Lee Hong-gi each composed a song for the album.  The record placed first on Hanteo's weekly album chart, as well as on Gaon Chart.  Preorders of the album lead the HMV online chart in Japan.
Answer: Lee Hong-gi