Ong Seong-wu heralds hard work in the second half of 2020! The singer said, “I’ll show you my improved self and my cool self.” Ong Seong-wu is confirmed to star in JTBC’s new Friday-Saturday drama “The Number of Cases” (directed by Choi Sung-beom, written by Cho Seung-hee, produced by JTBC Studio, and written by Contents), continuing his trend as an all-rounder celebrity. Source: KPopStarz