HaSeul (Hangul: 하슬) is the third revealed member of LOONA and a member of its first sub-unit, LOONA 1/3.
She was born as Cho Ha-Seul (Hangul: 조하슬) on August 18, 1997, in Bucheon, Gyeonggi Province, South Korea.
She debuted on December 8, 2016 as a member and subsequently released her solo single album HaSeul on December 15, 2016.
HaSeul was born in Bucheon, South Korea, on August 18, 1997. She is the oldest of two siblings, with one younger brother born in 2002.
In elementary school, HaSeul participated in her school choir, which ignited her love of singing. As a student, HaSeul studied abroad in Sydney, Australia for a month. In high school, she moved to Colorado, USA, and studied for another year. Upon returning to Korea, HaSeul had to stay an extra year in high school due to her time overseas. HaSeul planned to continue with her studies and go to college to study opera.
This plan changed after she was cast by BlockBerryCreative after participating in a singing contest at the recommendation of her music teacher. She passed her audition and became a trainee at the same time as YeoJin and Choerry, in late 2015 or early 2016. She and Choerry lived near each other and would commute to BlockBerry headquarters together.
HaSeul trained under BlockBerryCreative for one year before being selected as the third member of LOONA. This came after months of worry for HaSeul, who believed she would never debut when surrounded by so many other talented trainees. HaSeul had no known previous training in dance, and made mistakes during her choreography performance on selection day. However, she was still chosen as the third member of LOONA, which HaSeul couldn’t believe was real, even when traveling to shoot her music video.
On December 8, 2016, the second “Who’s Next Girl?” teaser was released, and HaSeul was revealed as the third member of LOONA that same day. She released her solo single album HaSeul on December 15, 2016, and subsequently on August 20, 2018 debuted as a member of LOONA.