ONEWE, ONEUS reveal their first ever music video for the song “Last Song”. They say, ONEWE and ONEUS, the stars of the one-year debut project “I Shall Debut” to create the first boy band of RBW, release their first digital single album “I Shall Debut.” ONEWE is a five-person band composed of Yonghoon, Ganghyun, Harin, Dongmyung and Kia, who received…