Back in February 2025, ONF made their comeback with Part 1 of their second studio album, ONF: MY IDENTITY, led by the single The Stranger. Pitching a Part 1 usually means there would be a subsequent part. But when it came to their November 2025 comeback, ONF return with a completely different sound to usual in Put It Back, and with their 9th mini-album, UNBROKEN, confusing everyone as we were expecting Part 2 of their second studio album. The sound change was due to ONF’s long-term producer, Hwang Hyun, being absent from production. But upon departing WM Entertainment earlier this year, the group has rejoined forces with Hwang Hyun under KI Entertainment to release Part 2 of ONF: My Identity and the title track Open The Door.

With ONF working with Monotree (Hwang Hyun) again, you know that they are in safe hands. And this is evident in their new song, particularly when it comes to its chorus, melodies and the familiarity of the members’ vocals. It all feels perfect for ONF and feels like a solid addition to their discography. Open The Door sees ONF bring in some rock intensity into the fold and the producers cleverly use it to their advantage to intensify parts of the track (like in the intro, outro and chorus). If I wanted anything more to Open The Door, it would to just hit it harder with the rock sound. The use of the “Door Door Door” echo as part of the instrumental in the intro and outro was quite interesting. I also enjoyed the simplicity of the “Open the Door” hook, which was quite memorable for me. The Latin in the bridge was a surprise, but served as a nice vocal interlude from all the members. And talking about vocals, we have to acknowledge the amazing outro, which literally ends with a high note from the members. Open The Door was a definite return to form for ONF, and like most ONF songs, I liked this one, as well.

The video makes perfect sense in the context of the song and its lyrics, and I also liked the encouraging messages it seeks to convey. The lyrics of Open The Door encourages listeners to ‘open the door’ and embrace the unknown beyond the door in our minds, particularly when you are in a dark place. The music video sees the members suffering from their inner demons and being confined by their own minds, before seeking to open the door to discover what sits on the other side. In the process, they escape and are able to destroy their inner demons.

The intense rock moments in Open The Door lends well for the performance, with the members able to show off with some intense choreography in the intro, pre-choruses, choruses and outro. I really liked the domino effect at the start of the routine and there are subtle door references to look out for in the routine, such as knocking and turning the door knob moves. Very relevant!

Song – 9/10
Music Video – 9/10
Performance – 9/10
Overall Rating – 9/10