Tradition / Region: Japanese folklore and medieval court legend
Alternate Names: Poisoned Melon of Seimei, Snake Melon
Category: Plant
The Myth
On the first day of the fifth month, during a time of ritual austerity for the regent Fujiwara no Michinaga, several notable men were gathered in seclusion. Among them were the onmyōji Abe no Seimei, a learned monk, a court physician, and the warrior Minamoto no Yoshiie.
That day, a tribute arrived from Nara — a gift of early melons. Yet because the court was observing strict ritual purity, doubt arose about whether the offering should be accepted. Michinaga ordered that the matter be divined, and Seimei was asked to determine whether the fruit was safe.
After examining the melons, Seimei declared that one among them carried danger. To confirm this, the monk began to chant prayers over the fruit. As his voice continued, one of the melons began to move on its own, swaying slightly as if something inside it stirred.
The physician was then ordered to treat the melon. He lifted it, studied it carefully, and without a word inserted two needles into its rind. At once the movement ceased.
Finally, Minamoto no Yoshiie was told to open it. Drawing his sword, he split the melon cleanly in two. Inside, coiled tightly in the flesh, was a small snake. The needles had pierced both of its eyes, and Yoshiie’s cut had neatly severed its neck.
The gathering understood that the fruit had concealed a hidden danger, and that only careful divination, prayer, and skill had revealed and destroyed it.
Another tale tells of a similar event at the imperial court, when melons sent from Yamato were examined by Seimei, a physician, and a monk. They too sensed an unnatural force within the fruit. As prayers were spoken, one melon split open, and a snake longer than a foot burst forth, dying at once.
Such stories spread widely, and the strange melons became known as signs that even the simplest offering from the earth might hide unseen forces within it, revealed only by wisdom, ritual, and a steady hand.
Gallery
Sources
Tyz-Yokai Blog. (n.d.). Hayauri-dokke. Retrieved March 1, 2026, from https://tyz-yokai.blog.jp/archives/1084458875.html
Interpretive Lenses
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- Christian Ascetic Deep Dive
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