On December 29, IU hosted the 2012 SBS Gayo Daejeon, an annual music program, alongside Bae Suzy and actor Jung Gyu-woon.
She was selected by the program's producer for her MC skills that she demonstrated on Inkigayo.
IU was born Lee Ji-eun on May 16, 1993 in Gwangjin District, Seoul, South Korea.
"Lost Child" is the lead single from her debut extended play Lost and Found, which was released on September 24, 2008.
For the album, IU was awarded the "Rookie of the Month" by South Korea's Ministry of Culture, Sports and Tourism in November 2008. During an interview in 2011, IU said, "My first album failed, but I'm grateful for that.
Her character was described as a "loser" who is seemingly average in every way except for her daring and bright personality, which helps her to overcome hardships.
Despite the worries of casting someone who is better known as a singer in the role, director Yoon Sung-sik decided to cast IU after seeing her performance in Dream High and thought that she suited the image he had envisioned for the character.
The Korea Joong Ang Daily described the album as one that would "suit all kinds of musical tastes and fans", while Billboard noted the "cinematic feel" of the album as set by the opening track, "Secret" (Korean: Produced by Jo Yeong-cheol, whom IU worked with on Real, the album contains collaborative works with singer-songwriters such as Yoon Sang, Lee Juck and Ra. The total number of download sales made from the album's tracks exceeded 10 million within the first two weeks.
As promotions for Last Fantasy and its main single "You and I" continued into 2012 in South Korea, IU began preparations for her debut in Japan by playing two shows at the Bunkamura Orchard Hall in Shibuya, Tokyo to an audience of about 4,000 people on January 24, 2012.
If I had become successful as soon as I made my debut, I wouldn't appreciate my staff members and the popularity that I'm enjoying now.") was also featured in Growing Up; a new rock-style arrangement of the song was released as the follow-up single to "Boo".
Towards the end of 2009, IU released her second extended play, IU... She began promoting its lead single, "Marshmallow" (Korean: ), on music programs across the three major television networks from November 13, 2009.
As one of the best-selling solo artists in the K-pop industry, which is dominated by boy and girl groups, Aside from her music career, IU has also ventured into hosting radio and television shows, as well as acting.
Following her supporting role in teen drama Dream High and minor appearances in several television series, IU starred in You're the Best, Lee Soon-shin, Pretty Man, The Producers and Moon Lovers: Scarlet Heart Ryeo.
The song was described as "saccharine" with a style that was a hybrid of the rock-and-roll of the 1960s and "French pop".).