柳田國男
According to the "Ōsumi Kimotsukigun Hōgen Shū" () jointly authored by the locally born educator, Nomura Denshi and the folkloricist Kunio Yanagita, at evening time, a cloth-like object about 1 tan in area (about 10.6 meters in length by 30 centimeters in width) would flutter around attack people.