Highlight, an 18-year veteran K-pop group consisting of members Yoon Doo-joon, Yang Yo-seob, Lee Ki-kwang, and Son Dong-woon, will hold a solo fan concert titled '18-Year Idol, But in Another World I'm a Debut Trainee?!' at Seoul's Jangchung Gymnasium from October 16-18. This unique concert features a concept where the experienced idols are reincarnated as rookie trainees, tasked with completing various quests to return to their original world after all their achievements and memories are reset. The performances will be held at 7:30 PM on October 16, 5 PM on October 17, and 4 PM on October 18. On August 26, Highlight announced on official SNS that fans can directly recommend songs for member challenges, group cover stages, and the final evaluation performance, making fans special trainers who participate in creating the concert. This marks their first fan concert in 1.5 years, continuing their tradition of creative concepts like 'Highlight Sports Day' and 'Detective Highlight.' Ticket presales for fan club members begin September 7 at 8 PM, with general sales starting September 10 at 8 PM.