Last Fantasy is the second Korean-language studio album by South Korean singer-songwriter and actress IU. It was released and distributed on November 29, 2011 by LOEN Entertainment. The album features a total of thirteen tracks, including the lead single "You and I".

Upon its release, Last Fantasy was a huge commercial success, selling almost seven million copies of digital tracks in its first week of release. The total number of its digital sales surpassed the 10 million mark the following week. Meanwhile, the physical album has sold over 117,000 copies, making it the 15th best-selling Korean album of 2011.

The album's lead single "You and I" debuted at the top of the Gaon Singles Chart, with a massive first-week digital sales of 1,129,761 units. It stayed at the summit for two more weeks. The song also hit the pole position on the Billboard Korea K-Pop Hot 100 for five consecutive weeks, becoming IU's first Korea K-Pop Hot 100 topper and the longest running number-one song on the chart. The record was held until tied with Psy's "Gangnam Style" and later broken by Lee Seung-gi's "Return", which earned six weeks at the top spot from December 2012 to January 2013.

Last Fantasy was meant to reflect the period in the IU's life where she bids farewell to her childhood and prepares to meet maturity. In this album, IU collaborated with singer-songwriters like , , Lee Juck, , and Ra.D.

Some of the songs in the album were composed and written by IU herself, with help from artists like Lee Juck, Kim Hyeon-cheol, Yoon Sang, Yoon Jong-shin, , and Corinne Bailey Rae. Her agency, LOEN Entertainment stated, "The album has been worked on for a long time, and the exclusive content included in the special limited edition will enable fans to better understand the album production process. It's a special gift from IU to those fans who have waited a long time."

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Wikipedia