Seo Sung Hyuk서성혁 Born August 26, 1999 · 27 years old2 series · 0 films Open in my diary BiographySeo Sung Hyuk is a south korean actor and singer member of the boy group RAINZ. TV series with Seo Sung HyukHigh! Touch2021 · Seo Eun Jae3 AM 22017