Group ONF released the first music video teaser for 'Open The Door,' the title track of their 2nd full-length album Part.2 'ONF:MY SELF,' through official SNS on the 12th. The released teaser features a mysterious mood that stimulates fans' curiosity, with an unidentified entity appearing in the visuals, raising expectations about the song's storytelling. Through this 2nd full-length album Part.2, ONF is set to showcase new music and concepts, and attention is focused on what message the title track 'Open The Door' will deliver.