On the other hand, there is a theory that the byobu nozoki was originally a byobu in a bedroom, which had watched many sexual relations and turned into a tsukumogami (artifact spirit).
だが一方では、多くの男女の秘め事を見続けてきた寝室の屏風が付喪神になったものが屏風のぞきとの説もある。