おばりよん
Obariyon is a child-sized monster from Niigata prefecture which loves to ride people piggyback style.
Obariyon lurks in bushes and trees by the side of the road, and when a traveler walks by, it leaps out onto their back crying out, “obariyon!” If the traveler relents and carries the obariyon on his back, the monster becomes heavier and heavier with each footstep, nearly crushing the traveler under its weight. In addition, this mischievous yokai chews the scalp of a person good enough to carry it, further adding to his misery. In order to protect against the head-chewing that obariyon inflict, some villages developed a custom of wearing metal bowls on their heads for protection.
According to some tales, as the obariyon becomes heavier and heavier, it eventually crushes its victim under its weight. However, more commonly, when a person has dutifully carried the obariyon the whole way home, he or she finds that the strange burden was a sack of money all along, and becomes incredibly rich.
The name obariyon comes from a phrase in local Niigata dialect meaning “give me a piggyback ride!” Differences in local dialects are reflected in the many different local names for this spirit. Though its name varies from place to place, it is always a local variant for a childish request to be carried piggyback style.
Although the exact origins of this particular creature are unclear, folk tales about yokai which demand to be carried or cared for are quite common across Japan. There is a recurring theme among folk tales that those who persevere when dealing with children will prosper. Just as those who put up with the strange demands of the obariyon may find themselves blessed with a bag of gold, those who manage to deal with the demands of raising young children will eventually reap treasures beyond belief. Obariyon is probably a direct metaphor about child-rearing. While the demands of the obariyon may be selfish and extremely burdensome, those who are willing to put up with it for the entire journey find the payoff was well worth the investment.