Synopsis: My Father Is the Number One Under Heaven

Yeo Un-hui, who lived a life of madness as the Blood Demon after losing his family, meets a tragic end. Just as he believes everything has ended in misery, he is granted a second chance and regresses to a time before he lost everything. Vowing to protect his family at all costs, he decides to live this life not as the Blood Demon, but as the Martial God.