Saya

On December 24, 2020, she was revealed as the ninth member of DMZA (later known as KELT9b) under the name Suhyun. On May 3, 2021, her official profile photos were released under the stage name Haeseo. They made their debut on November 23, 2024 with the digital single "Uncrushable".

The group is assumed to have disbanded after most of their SNS accounts were deleted in May 2025. On January 14, 2026, she was announced to be a member of the girl group NAVILLERA under the stage name Saya. The group made their debut with the digital single "No Limit" on February 3.