Skin

In ancient times, humans and demons were in opposition. Demons disguised themselves as humans and lived on the earth, sucking the lifespan of humans. The son Ying Jie of a mortal woman named Lian Hua was kidnapped by a demon and his whereabouts are unknown. Lian Hua was eager to have a son, so she adopted another son and named him Ying Ning . Many years later, the missing Ying Jie returned unharmed. After a series of strange events, he gradually uncovered a shocking conspiracy that had been hidden for many years...
(source : mydramalist)