R

On October 23, 2022, he was revealed as a member of the pre-debut boy group OCJ NEWBIES (later XODIAC). However, he did not make it to the final line-up. On February 20, 2023, Sangwoo was officially introduced as a contestant of Fantasy Boys.

Unfortunately, he was eliminated in the eighth episode, which aired on May 18, 2023. On May 8, 2025, Season Five introduced him as a member of their upcoming boy group LEVERGENT under the stage name R. On October 17, the group announced that they would release their first digital single titled "Vroom (No Break)" on October 24, 2025.