Korean: 형서
Suwon, Gyeonggi-do
Country:South Korea
Hyeongseo (형서) is a South Korean singer under JTG Entertainment and Marbling E&M. She is a member of the project girl group CLASS:y and a former member of the girl group Busters. On March 29, 2020, Hyungseo posted a letter on fancafe announcing that she was leaving the group to focus on her studies.
She debuted as a member of Busters on November 27, 2017 with the group's first single "Dream On".
Hyeongseo participated in the MBC survival show "My Teenage Girl" in 2021. She finished in third place in "My Teenage Girl" confirming her debut as a member of the final girl group CLASSy.
Hyeongseo debuted as a member of CLASS:y on May 5, 2022 with the mini album Class Is Over.