He never did.
"Inshuu," she hissed. "He took our image. Now the mountain knows we exist. We must become a shadow again." Here is where history blurs into nightmare. To combat the inshuu —the external memory of the village—the elders enacted a ritual called Hitotsu-deri (The Single Exile). oneshota mura no inshuu
The inshuu is not a ghost. It is not a curse. He never did