Ibaraki-doji

Ibaraki dōji (茨木童子 or 茨城童子 "Ibaraki child") is an oni (demon or ogre) featured in tales of the Heian era. In the tales, Ibaraki-dōji is based on Mount Ooe, and once went on a rampage in Kyoto. The "Ibaraki" in his name may refer to Ibaraki, Osaka; "dōji" means "child," but in this context is a demon offspring. Ibaraki Douji was the most important servant of Shuten-doji.

As for the birthplace, there are theories that it may be Settsu province (Mio, Ibaraki, Osaka, and Tomatsu, Amagasaki, Hyōgo) or Echigo province (Niigata, formerly Tochio, now a settlement in Karuizawa, Nanago). Ibaraki-doji had teeth since birth, and was feared for being a giant. After he became an oni, he met Shuten-doji and became his subordinate, and together they aimed for the capital.

The Shuten-doji gang was based on Mt. Ooe (said to be in Tamba province, but there are also theories that it may have been at Mt. Ooe (大枝), at the boundary between Kyoto and Kameoka. The gang ran amok in the capital, kidnapping families’ girls among other things, but they were destroyed by Minamoto no Yorimitsu and his four vassals, the Four Guardian Kings. However, Ibaraki-doji was able to escape.

There is a theory that, just like Shuten-doji, Ibaraki doji was also born at Echigo. Born at the Sunagodzuka in Ganbara (now Niigata, Tsubame, Sunagodzuka), Ibaraki-doji was a page at the Kokojou-ji, but since Ibaraki-doji was born in Karuizawa in the mountain recesses of the Koshi District (now Niigata, Nagaoka, Karuizawa), Ibaraki-doji was given to the Yahiko-jinja. That place is where Ibaraki-doji and Shuten-doji engaged in sumo, and there is a small shrine enshrining Ibaraki-doji. In that same area, family name "Ibaraki" is common, and there is a legend that those of the Ibaraki family have a customary practice of not wrapping beans on last day of winter on the traditional Japanese calendar, and that a delinquent will come of the family if they make a gable on their roofs, which is why they do not make them.

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