bbcでも書かれてるじゃん

Some said this was based in "tsukumogami” - a term from Japanese folklore describing a tool which can contain a spirit or even soul of its own.

https://www.bbc.com/news/articles/cld0rxlqgggo?xtor=AL-72-%5Bpartner%5D-%5Bbbc.news.twitter%5D-%5Bheadline%5D-%5Bnews%5D-%5Bbizdev%5D-%5Bisapi%5D&at_medium=social&at_link_type=web_link&at_campaign_type=owned&at_ptr_name=twitter&at_link_id=BF6D3A92-0DEE-11EF-ABF5-9A8191C91418&at_link_origin=BBCWorld&at_bbc_team=editorial&at_campaign=Social_Flow&at_format=link