Residual manifest should work with object of obsession
Object doesn't reveal the aura of the killer if your aura isnt reavealed in the first place. This can be achieved using distorsion, off the record, going in a locker and so on. Giving the killer the blindness effect shouldnt be the same as hiding your aura. Theoretically, your aura should be shown but the killer cannot see it, but practically the blindness effect hides your aura.
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