Kim Yooseung

On November 25, 2022, the dance crew CREW STANDUP reorganized with Kim Yooseung joining the group. They promoted as a girl group at events and festivals soon after and officially rebranded from CREW STANDUP to StandUp. In August 2024, Kim Yooseung joined the jihadol survival program Girls Frontier under the stage name I WON.

She was with the team True Blue. On September 24, she was introduced as the sub-vocalist of StandUp. On January 21, 2025, it was announced that True Blue members Movin and Kim Yooseung would be holding a fan meeting titled "MUAH" on February 1.