Bae Shi Jun, known by his stage name Roshin, is a South Korean singer and main vocalist of JWiiver. He is studying at Hanlim Art School but prior to that he was a contestant in the show "World Klass" but was eliminated in the early rounds. In early 2022, he was announced as a member of JWiiver, the new idol group created by Starweave Entertainment, and he made his debut with the EP album "JTrap".