K-pop group ONF made their official comeback appearance on MBC M and MBC every1's 'Show Champion' broadcast on the 24th. During the performance, the group showcased the title track 'Open The Door' and B-side track 'Escape' from their regular 2nd album Part.2 'ONF:MY SELF'. This appearance marks the beginning of ONF's official promotional activities for their new album with a powerful start.