Yoon Hyun-soo made his acting debut in 2021 with a supporting role in the SBS sports drama Racket Boys. In 2022, he played Kim Sung-ryung’s son in the tvN series Kill Heel. That same year, he appeared as one of the main characters in the first and second seasons of the web drama Hope or Dope. He later joined the main cast of the 2022 Wavve youth series Seasons of Blossom.