Pilgrim (Book 1)

Abandoned at birth and raised to be an assassin by the mysterious Diyu Brotherhood, Danzen Ravja has had enough of the life of a contract killer. After completing his disastrous last assignment, he slips away to the remote Genshin Valley hoping to disappear for good. Once he reaches Suja Village, Danzen does his best to keep his identity a secret. He eventually becomes known as "Pilgrim" by the locals after he takes shelter in an abandoned monastery, which he plans to rebuild. But his troubled past quickly catches up with him.

 At the direction of his former teacher, the Brotherhood has put a hit on Danzen that has every assassin in the kingdom after him, which would be bad in itself if it weren't for his dark secret: Danzen Ravja is half-demon, and if he spills even a single drop of blood, he unleashes a horde of demons who will stop at nothing to kill Danzen and anyone he holds dear.