The group ONF (members: Hyojin, Tion, Seungjun, Wyatt, Mingyun, and Yuto) has announced their 2nd studio album Part 2 titled 'ONF: MY SELF' and launched their comeback activities. At a comeback showcase held at the Cube Convention Center in Sangam-dong, Seoul on June 17, 2026, the six members presented their new song 'Open The Door' with impressive performances. Through this album release, ONF is demonstrating their new musical direction and strengthening their position in the Korean idol industry.