Euna Kim

She released a second part to the music video to "Without You Now" on May 27, featuring shots of Euna Kim singing and dancing. She then joined Music K Entertainment and debuted as Yuna (유나) in the girl group The Ark on April 10, 2015 with the single "Somebody 4 Life". However, the girl group was short lived and never released any further music.

They disbanded approximately a year after debut. Following The Ark's disbandment, she participated in the female rap survival show Unpretty Rapstar 3 in 2016. However, she did not make it into the quarter finals and was eliminated in episode 8.

In October 2017, Yuna along with former The Ark member Halla joined the idol rebooting show, The Unit. Yuna ranked 10th in the final episode and hence was eliminated as she did not reach the top 9 ranks to debut. On April 11, 2018, Yuna (now using the name Euna) formed the girl duo KHAN along with former The Ark member Jeon Minju under Maroo Entertainment.

The duo covered eight popular songs before releasing their debut digital single titled "I'm Your Girl? " on May 23, 2018. Sometime in 2019, the duo was speculated to be disbanded after being removed from Maroo Entertainment's official website.

Euna also moved to the USA in the summer of 2019. By December 2019, she appeared to have left the Korean entertainment industry and now served as a full-time Christian missionary. On March 18, 2020, Euna clarified her situation via Instagram.

She confirmed KHAN has long been disbanded, citing mistreatment, amongst other things, as a factor for the disbandment. She also stated that while not being active in the entertainment industry anymore, she is still under contract with Maroo Entertainment. On May 24, 2021, she shared her marriage plans and officially announced her retirement as an idol.