Seungjun

Seungjun (승준), known to many older fans as J-Us, sits in the performance spine of ONF. K&I Entertainment's current member presentation uses Seungjun as the official name, which makes the shift part of the group's active 2026 identity instead of a loose footnote from a prior era.

That makes him relevant beyond choreography talk. ONF's first full comeback under K&I Entertainment has to prove that a management change can sharpen identity instead of flattening it, and that depends on members who can carry concept, pacing, and stage chemistry together. Seungjun remains central to that case in the ONF:MY SELF cycle.

ONF has never worked like a plug-and-play idol brand. It depends on internal balance and performers who make the structure feel alive. Seungjun remains part of that engine, which is why his page needed a clearer current-era read than a thin placeholder profile.