Oh Hyeon Tae

On October 3, 2021, Hyeontae appeared in a commercial for Shinbi Haunted House Sword toy. On December 24, he appeared in Na Haeun's music video "Butterfly". On February 20, 2023, he was introduced as a contestant on MBC's boy group survival show Fantasy Boys.

During the show's finale, he was revealed to have ranked 4th overall, thus making him a member of FANTASY BOYS. They debuted on September 21, 2023 with the mini album New Tomorrow.