Rottyful Sky (로티플스카이 also known as Hanul), debuted in 2001 under the name of Hanul with the album Voice of Purity.
- Stage Name: Rottyful Sky (로티플스카이)
- Former Stage Name: Hanul (하늘; Sky)
- Real Name: Kim Ha Neul (김하늘)
- Birthdate: March 22, 1988
- Deathdate: October 8, 2013 (aged 25)
- Blood Type: AB
- Height: 167cm
- Weight: 48kg
with her song "Gotta Be Kidding" under album Voice of Purity and received love for her cute looks and unique performance. At the time, she was under the spotlight for being one of the few young, rising female solo artists along with BoA, Joanne, Dana and others.
In 2006, it was announced she would join the Hip-Hop/Dance group Roo'ra, although she withdrawn in 2007 before releasing any new material. The announcement was made at the same time as Roo'ra's announced their comeback with a best album, hence Hanul is credited on the album although she didn't participate on it. Three years later she joined the unit MADmoiselle. The unit only released one digital single before disband.
In 2010, with the support of Ryu Shi Won’s management, she changed her stage name to Rottyful Sky and transformed into a singer/songwriter. On 21 July 2010, she launched her comeback digital single "No Way" with a Sony Korea's 3D music video, as part of Sony-sponsored project, helmed by female director Lee Sa-gang who also attended the day's showcase. The showcase was held at multiplex Coex Megabox in Seoul, South Korea.
In 2011, Rottyful Sky also participated in a couple of drama OSTs and received attention for her song "Blue Bird" of Scent of a Woman OST. She also casting as a part of the annoying niece of Byun Jang Soo, a stock investor in tvN mini-drama call Manny. After 1 year later, 12 February 2013, she release another digital single "Get Away"
Rottyful Sky was diagnosed with having a brain tumor in year 2012. According to sources, she stopped all activities to battling against her illness and in 1 July 2013, she was seen attending Ki Sung Yueng and Han Hye Jin‘s wedding, looking like she gained some weight. It turns out, she gained weight from the medication and treatment for her tumor. On 17 September 2013, Rottyful Sky visited the hospital for not feeling well. She was given basic treatment and returned home as always. While she was resting, she lost consciousness and was brought to the hospital on 18 September 2013. During her transfer to the hospital, she stopped breathing and was given CPR two times. She was unable to gain consciousness. She was admitted into the intensive care unit for about 20 days in a brain-dead state and was given tests and treatment. She had drawn her last breath on 8 October 2013 at 4PM (KST) at The Catholic University of Korea Seoul St. Mary′s Hospital. She was 25 years old. The statement continued, "Her family stated that a brain tumor wasn't the cause of death like the media has been reporting. Although the final cause of her death is still unknown, the doctors declared her brain dead."
9 October 2013, Kahi posted on her Twiter, "Rottyful Sky… Haneul was Alice Sky, who composed and wrote my comeback song ‘It’s Me’. It was Haneul's first work. It's now her last."
- [2001.08.16] Voice of Purity (Hanul)
- [2007.09.05] House Rulez - Mojito (#3 Mojito (feat. Hanul))
- [2008.06.20] My-Q - This is for you (#4 Yeoreum Haneul (feat. Hanul))
- [2008.09.24] Listen Campaign (#4 Save My Heart)
- [2008.11.18] Ignite - 1st Single Album - Ignite Spot (#2 Good Memories (feat. Hanul))
- [2009.06.16] Ignite - Look So Good (#10 Good Memories (feat. Hanul) (Full Version))
- [2009.08.28] Style OST (#1 Tell Me (JP, Hanul), #5 Eojjeoda Neoreul, #17 Tell Me (Hanul Version))
- [2011.07.14] BIG BANG - BIG BANG 2+1 (#1 2+1 (feat. Hanul))
- [2011.07.29] Scent of a Woman OST Part.1 - (#2 Bluebird)
-  Manny (EP5)
- She went to the same elementary school as BIGBANG's Taeyang, and to the to the same middle school as BIGBANG's G-Dragon.
- She was produced by actor-singer Ryu Shi Won.
TV / Radio Music Shows
- Note: This is an incomplete list -update 14.12.2013
- 22.07.2010 M!Countdown - No Way
- 24.07.2010 Love Power Music - No Way
- 25.07.2010 Inkigayo - No Way
- 31.07.2010 Music Core - No Way
- 01.08.2010 Inkigayo - No Way
- 03.08.2010 tvN Newton Chart - Don't Forget
- 06.08.2010 Music Bank - No Way
- 06.08.2010 Now Tv Interview
- 08.08.2010 M-Wave EP15 - No Way
- 09.08.2010 tvN - Nobody & No Way
- 11.08.2010 M!Countdown - No Way
- 12.08.2010 M!Countdown - No Way
- 15.08.2010 Love Power Music - No Way
- 15.08.2010 M-Wave EP16 - No Way
- 18.08.2010 M!Countdown - If i ain't Got You & No Way
- 19.08.2010 SBS Power FM
- 22.08.2010 M-Wave EP17 - No Way
- 23.08.2010 tvN Newton - No Way
- 31.08.2010 Strong Heart (EP41) (강심장) (強心臟)
- 07.09.2010 Strong Heart (EP42) (강심장) (強心臟)
- 11.09.2010 Muisc Core - No Way
- 14.09.2010 Kiss The Radio
- 17.09.2010 Mnet He Is Not That Into You (EP13)
- 19.09.2010 M-Wave EP21 - No Way
- 07.10.2010 Kiss The Radio