In December 2021, all five Korean members of ONF decided to enlist in mandatory military service together.
Except for member U, who is Japanese, the rest of the members - Hyojin, E-Tion, J-US, Wyatt, and MK - all enlisted in the same month just a few days apart.
Then on October 9, the five members were seen performing together at the Gyeryong-gun Cultural Festival while serving their national duties. All the members were seen in training uniforms and still performing perfectly on stage.
Fans were happy to see their favorite boy group during their military service. Many netizens agreed that it is a good thing that all the members enlisted together since they can perform together for military events and also are able to make a comeback at the same time while minimizing the hiatus period.
Fans and netizens commented, "They thought about the fans and decided to enlist together. Let's become more successful next year," "I think this was a good idea for them to enlist all at once and then they can make a comeback in a short time," "ONF really thinks about their fans a lot, they all decided to enlist together so that they can make a comeback as fast as they can," "I'm so happy they were able to perform together like this in their uniforms," "They will soon be discharged," and "It's good that they enlisted together."
Members enlisting around the same time is ideal for a shorter hiatus, but I do like the idea that these men can have lives of their own w/o every move revolving around their group. Whatever the case, as long as the members want to do it, then that's all that matters.