Chu Si Woo, known formerly as JM, is a South Korean singer, dancer and member of JUST B (저스트비). Before debuting, he appeared in "I-LAND" representing his agency, Bluedot Entertainment (블루닷엔터테인먼트), and he had been a trainee for 11 months. He made his debut in June 2021 with the group's first mini-album, "Just Burn". On July 16, IST Entertainment announced that JM had recently changed his given name, Chu Ji Min, to Chu Si Woo. As a result, he decided to leave his old stage name behind and would instead be promoting under the new name, Si Woo. On July 19, 2024, it was announced that Si Woo would be going on a temporary hiatus. In September 2024, JUST B will join ATBO to form a special project group called THE CREW ONE (더크루원) to participate in the survival show "Road to Kingdom Season 2". (Source: MyDramaList) Watch drama online for free.