HIGHLIGHT's 2026 solo fan-con ‘I, an Idol in My 18th Year, Am a Debut-Team Trainee in Another World?!’ sold out all three shows during the fan-club presale. The shows will be held at Jangchung Gymnasium in Seoul from October 16 to 18. The fan-con is built around HIGHLIGHT, which is approaching its 17th debut anniversary, transforming into trainees on a debut team in another world. It will feature audience-participation segments, including an evaluation of songs recommended in advance by fans, as well as live performances by the four members.