HaSeul (하슬) is a South Korean singer under BlockBerryCreative. She is the leader of the girl group LOONA and its sub-unit LOONA 1/3.


2016: Reveal, solo debut

On December 8, 2016, she was revealed as the third member of LOONA. Her solo single album, titled "HaSeul", was released on December 15.

2017: Debut with LOONA 1/3, MIXNINE

She debuted as a member of the group's first sub-unit, LOONA 1/3, on March 7, 2017 with the mini album Love & Live.

In October, HaSeul, alongside fellow members HeeJin and HyunJin, auditioned for the survival show MIXNINE. However, HaSeul did not pass the audition.[1]

2018: Debut with LOONA

On August 20, 2018, LOONA debuted as a full twelve-member group with their first mini album + +.

Personal life


On January 8, 2020, BlockBerryCreative released a statement stating that HaSeul had been diagnosed with recurring anxiety. In order to recover, it has been decided that she will be taking a temporary hiatus to focus on her mental health. Due to this, she will not be promoting in the then upcoming album #.[2]


Single albums


Reality shows

  • MIXNINE (JTBC, 2017–2018) - contestant


  • HaSeul is bilingual in English and Korean.
  • HaSeul was initially preparing to study opera music in college.[citation needed]
  • Her music teacher recommended her to participate in a teenage music festival; she did not win any awards, but was casted to become a trainee under Blockberry Creative.[3]
  • In the audition, she got accepted singing IU's "Friday”.[4]
  • HaSeul trained for 1 year prior to her reveal single.[citation needed]
  • Her father has always supported her dream of becoming a singer.[citation needed]
  • Her goal is to become a singer who can ring the public’s heart with her music.[citation needed]
  • Both her ears have different shapes.[citation needed]
  • HaSeul has a fear of birds.[citation needed]






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