He was the lost eldest son of the royal family and a world-famous miraculous doctor. He lost his heart after meeting a very young but very sensible child, until the child turned from treating him very well to being ruthless. He was imprisoned in a dungeon and tortured for three years. He also brutally killed his most beloved master. He vowed to make the child pay with blood.
As the son of the leader of the martial arts alliance, he has a distinguished status, but because he was born with immortal energy, he was haunted by monsters. His body was taken from him when a child was supposed to be the most carefree. He also caused the eldest brother he was most obsessed with to suffer misfortune. He could only play the role of a beggar, sneaking to the dungeon every night to take care of his eldest brother.
The story begins on the eve of his eldest brother's escape from the dungeon...