Lee Seung Jun, better known by his stage name J-US, is the leader, vocalist and dancer of the boy group ONF.
On December 27, 2021, he enlisted as an active-duty soldier.
Also Known As：J-US·제이어스·이승준·Lee Seung Jun·Ли Сон Чон·Seungjun·승준·Сончон·
Biography：Lee Seung Jun, better known by his stage name J-US, is the leader, vocalist and dancer of the boy group ONF.
On December 27, 2021, he enlisted as an active-duty soldier.
![온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 2](https://image.tmdb.org/t/p/w342/whume1STRxwi0EVBYU8ZMk669nG.jpg)
![온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 1](https://image.tmdb.org/t/p/w342/zyN3yVwFR1NoZGgxd77aZ4etce7.jpg)
![온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 2](https://image.tmdb.org/t/p/w342/6DhiTgCYAg09SDRLGCktfByp6xD.jpg)
![ONF [FOCUS ON AND OFF]](https://image.tmdb.org/t/p/w342/Au7UBGXv8opgUV1V7lUzl4Bu2i2.jpg)
![ONF 2021 LIVE CONTACT :: CODE #1. [REVERSE]](https://image.tmdb.org/t/p/w342/4wjPi5x2igYJI9jrbE5QcJhSW8X.jpg)
