The yōkai researcher, Tada Katsumi states that these stories arrived in Japan in the Muromachi to Azuchi-Momoyama periods, when there was still trade with southern China and Southeast Asia.
Yōkai istraživač, Tada Katsumi navodi da su ove priče stigle u Japan u Muromachi do Azuchi-Momoyama razdoblja, kada je još trgovina s južne Kine i jugoistočne Azije.