My Ghost Protector.

Adventurous Prince Thinnakorn strays into a mysterious valley where demonic spirits are rumoured to live. Rescued by eight ghosts, the prince survives, but the memories of his past are now gone. Taken in by and raised by the spirits, one day he learns that the eight ghosts are treasure keepers. He decides to take a quest to find the true owner of the treasure in order to free the eight spirits and search for his real family.