This story of a round UFO-like vessel, referred to as an utsurobune (”hallow ship”), drifting ashore on the Japanese coast in what is now Ibaraki Prefecture is found in many records of the Edo period. The craft was marked by mysterious writing and a beautiful woman emerged, wearing strange clothing and carrying a box. Gifu University professor Tanaka Kazuo has studied the topic in detail and even written a book (under a pen name) about it titled in English The Mystery of Utsuro-bune.