J-US · 제이어스 · 이승준
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] IN SEOUL NIGHT 2](https://image.tmdb.org/t/p/w300/6DhiTgCYAg09SDRLGCktfByp6xD.jpg)
온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 2
SEUNGJUN
2024
![온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 2](https://image.tmdb.org/t/p/w300/whume1STRxwi0EVBYU8ZMk669nG.jpg)
온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 2
SEUNGJUN
2024
온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 1
SEUNGJUN
2024
![2025 ONF CONCERT [THE MAP:STRANGER’S PATH]](https://image.tmdb.org/t/p/w300/pvF5lXWpkD3HuDDJSXeXtKXlZD1.jpg)
★5.02025 ONF CONCERT [THE MAP:STRANGER’S PATH]
SEUNGJUN
2025
![ONF 2021 LIVE CONTACT :: CODE #1. [REVERSE]](https://image.tmdb.org/t/p/w300/4wjPi5x2igYJI9jrbE5QcJhSW8X.jpg)
ONF 2021 LIVE CONTACT :: CODE #1. [REVERSE]
SEUNGJUN
2021
![온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 1](https://image.tmdb.org/t/p/w300/zyN3yVwFR1NoZGgxd77aZ4etce7.jpg)
온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 1
SEUNGJUN
2024
![2026 ONF CONCERT [THE MAP: BEYOND THE HORIZON]](https://image.tmdb.org/t/p/w300/vQmZPhEa8KrUCwrqRqMpl9pube9.jpg)
★5.02026 ONF CONCERT [THE MAP: BEYOND THE HORIZON]
SEUNGJUN
2026
![ONF [FOCUS ON AND OFF]](https://image.tmdb.org/t/p/w300/Au7UBGXv8opgUV1V7lUzl4Bu2i2.jpg)