Lee Seung-jun, known mononymously as Seungjun and formerly known as J-Us, is a South Korean singer and lyricist under KI Entertainment. He is a member of the boy group ONF and its OFF team sub-unit.
20262026 ONF CONCERT [THE MAP: BEYOND THE HORIZON]Movieas SEUNGJUN20252025 ONF CONCERT [THE MAP:STRANGER’S PATH]Movieas SEUNGJUN2024온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 2Movieas SEUNGJUN2024온앤오프(ONF) CONCERT [SPOTLIGHT:THE HIDDEN SHADOW] NIGHT 1Movieas SEUNGJUN2024온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 2Movieas SEUNGJUN2024온앤오프(ONF) CONCERT [SPOTLIGHT] IN SEOUL NIGHT 1Movieas SEUNGJUN2024ONF [FOCUS ON AND OFF]TV showas SEUNGJUN · 7 episodes2021ONF 2021 LIVE CONTACT :: CODE #1. [REVERSE]Movieas SEUNGJUN2021Dive Into ONFTV showas Self · 6 episodes2020Can I Step In?TV showas Kwon Sang Hae · 10 episodes2020The Silence Of IDOLTV show1 episodes2020Road to KingdomTV showas Self - Contestant · 8 episodes2018Idol RadioTV showas Special DJ · 6 episodes2018Star RoadTV showas Self · 8 episodes2011Weekly IdolTV showas Self · 1 episodes