SANGWOO is JUST B’s youngest member and an expressive dancer and vocalist. His performance balances more mature and powerful choreography with youthful musical delivery. He participated in the team’s various album eras, touring and its 2025 performance-video projects.

JUST B debuted June 30, 2021 under Bluedot Entertainment. The group’s work combines carefully structured dance, vocal and rap performance. SANGWOO remains part of its six-member line-up, while the group’s international fan base is called ONLY B.

Not every variety-show performance or songwriting credit represents an independent solo debut. This page focuses on documented professional highlights and does not invent an individual solo discography.