For example, a fox spirit that just looks like a fox is easy to identify, but spirits who have ever committed wrong acts change themselves into other appearances in line with each time, so it is difficult to find out.
例えばそれが狐なら狐の様相を露呈するから、すぐ判るが悪行を積んだ霊などの場合は、その時代時代に合わせて化けているので見破る事が中々難しい。