Reliquary of Faith is found in Oshima Coast.
Puzzle
The boy-made-man crafted blessings of his own. So others born under Mount Yotei will look to the true mountain for strength.
How to Solve
Spin all 4 foxes to face forward to Mount Yotei in the distance (facing north-east), facing in the direction of the cliff where the far-away fox statue is. You can’t reach the fox statue on the cliff, but it will spin when you interact with the other foxes.