A Jubokko that sucks life out of human beings in such a way is said to always maintain a fresh appearance.
It is said that a Jubokko branch could heal and decontaminate an injured person.
[2][3] Folklore scholars such as Kunio Yanagita and Iwao Hino, who wrote works such as "Youkai Stories" and "Vocabulary of Changes in Japanese Youkai", respectively, state in written works about folklore yōkai that there is no yōkai that became the origin of the Jubokko.
[4][5] A group of experts from a group called To Scholar Conference (と学会, to gakkai), run by yōkai scholars Natsuhiko Kyogoku and Tada Natsumi, writer Murakami Kenji, and SF writer Yamamoto Hiroshi, stated that there is no source of appearance for this yōkai tree and that it can be theorized that this yōkai is a fictional creature conceived by Shigeru Mizuki.
[6][7][8] Mizuki stated that he created around 30 different yōkai in his comic book GeGeGe no Kitaro, but he did not specify which among the yōkai described in his work were his original creations.