The Faraway Paladin

The Faraway Paladin (最果てのパラディン, Saihate no Paladin) is a light novel series by Kanata Yanagino, with illustrations by Kususaga Rin. The first volumes was released March 24, 2016. J-Novel Club has released it digitally in English.

A manga adaption by Mutsumi Okuhashi began September 25, 2017.

Plot
In a city of the dead, long since ruined and far from human civilization, lives a single human child. His name is Will, and he's being raised by three undead: the hearty skeletal warrior, Blood; the graceful mummified priestess, Mary; and the crotchety spectral sorcerer, Gus. The three pour love into the boy, and teach him all they know. But one day, Will starts to wonder: "Who am I?" Will must unravel the mysteries of this faraway dead man's land, and unearth the secret pasts of the undead. He must learn the love and mercy of the good gods, and the bigotry and madness of the bad. And when he knows it all, the boy will take his first step on the path to becoming a Paladin.

Official
Official English site (novel)

Official Japanese manga site