[3] Before joining Ladies' Code, Kwon was also active as a model and previously participated in Miss Korea 2009 as the Japan representative.

[4] In 2011, Kwon appeared in the third season of MBC's reality show We Got Married, where she was paired up with former Birth of a Great Star contestant, David Oh.

Their debut EP, Code#1 Bad Girl was released on March 7, 2013, through online music stores and the group performed on M Countdown on the same day.

On February 13, 2014, the official music video for their first single, So Wonderful was released and the group performed the new song for the first time on M!

[15] Rainy conditions made the road slippery, which caused Park to suddenly lose control of the vehicle, causing the group's van to hydroplane and skid several times before crashing into a protective wall in the vicinity of the Singal Junction on Yeongdong Expressway.

[20][21] Kwon was immediately taken to the Catholic University of Korea St. Vincent's Hospital, where she was given emergency CPR before being taken into surgery due to suffering severe cranial and abdominal injuries.

[24] In the midst of a fourth procedure for her back in the 11th hour of surgery,[25] Kwon's blood pressure began to drop very rapidly, making it unsafe to continue.

It was reported that her brain was severely swollen and that she was not regaining consciousness, with the doctors closely monitoring her condition in order to safely resume surgery.

Many prominent South Korean stars attended her funeral or sent flower wreaths including her former Birth of a Great Star mentor Lee Eun-Mi, members of Super Junior, idol Roh Ji-hoon, Shinee, Kara, Bestie, Secret and more.