She debuted in 2001 with the album Voice of Purity under the stage name "Sky." She was 14 years old at the time under East Asian age reckoning. In 2006 she announced she would join the Hip-Hop Dance group Roo"ra, although she withdrew in 2007 before releasing any new material. The announcement was made at the same time as Roo"ra"s announcement of their comeback with a "best of" album, hence she is credited on the album although she didn"t participate on lieutenant
In 2009 she joined the group MADmoiselle, which released one digital single before disbanding.
Nine years after her debut, in 2010, she made her comeback as a solo artist, under the stage name Rottyful Sky, with the release of the digital single " (Rottyful Sky song)". At that time, she became the first singer to be produced by actor-singer Ryu Si-won.
On June 24, 2010, Sony MUSIC launch the first Korean video of "Number way" in 3D. On February 12, 2013, she released a second digital single "". On 8 October 2013, she died at the age of 25 after struggling with a brain tumor.
She studied in the same elementary school as BIGBANG"s Taeyang, and the same middle school as BIGBANG"s G-Dragon.
She was produced by actor-singer Ryu Si-won.