The Roots of Rebellion: Gender Imbalance and Policy Failures in 9th-Century Tohoku

 

On January 11th, 802, the Imperial Court ordered 4,000 young people from ten provinces—including Suruga, Musashi, and Hitachi—to migrate to the Tohoku region as sakimori (farmer-soldiers). Driven by the allure of colonial profit, these settlers moved north. However, the expedition consisted predominantly of young men, which caused a drastic demographic imbalance in the region. This led to inevitable instances of sexual violence and deep-seated resentment among the local population.

By the early 9th century, the court realized the fragility of its control. On New Year’s Day in 811, Emperor Saga (r. 809–823) issued an unprecedented appeal, urging those who had fled to "barbarian territories" to return under the promise of a three-year tax exemption. Historically, northern indigenous groups who surrendered were exempted from taxes and provided with food and clothing in exchange for local products. The Emperor’s speech suggested that many had been deprived of these privileges. Consequently, the Court shifted its policy from pure suppression to a forced assimilation of those living within Japanese territory.

The following years saw further administrative shifts. In 812, indigenous communities were ordered to choose their own chiefs, and by 813, specialized governors and vice-governors were appointed to manage "indigenous affairs." In 815, Emperor Saga prohibited the derogatory term Ifu (surrendered barbarians), decreeing that they be addressed by their names and ranks. In essence, he demanded they be treated as human beings. While these policies empowered certain local families—eventually giving rise to the powerful Kiyohara clan in Ideha Province—no decree could curb the greed of the colonists or ease the pain of the conquered. Within two generations, this simmering discontent exploded into rage.

In 878, after years of harsh administration under Yoshimine Chikashi, an officer at Akita Castle, the frustration of the subordinate indigenous groups reached a breaking point. In March, they rose in a massive uprising, raiding Akita Castle and forcing Chikashi to flee. The rebellion spread rapidly, and even the Governor of Ideha, Fujiwara Okiyo, was forced into retreat.

The Imperial Court scrambled to respond, conscripting thousands of soldiers from the Kanto region. Despite dispatching 3,000 troops from Mutsu Province under Fujiwara Kajinaga, the central army suffered a crushing defeat in June. Akita Castle was plundered of armor, horses, and vast stores of rice. Twelve villages fell under rebel control, and the uprising gained support from indigenous groups as far north as Tsugaru.

In May 879, the Court appointed Fujiwara Yasunori as the new Governor of Ideha to restore order. Yasunori was a wise administrator who had previously suppressed pirates in western Japan. He possessed a keen sociological eye, categorizing rebels into two classes: the leaders—often "dropouts" from Kyoto or disgraced officials who had married into local families—and the commoners, driven to violence by "hunger and frost."

Yasunori, alongside General Ono Harukaze, adopted a strategy of pacification rather than brute force. When three indigenous groups demanded that the land north of the Omono River be recognized as their own territory, Yasunori chose to demonstrate both strength and generosity. He mobilized troops from Hitachi and Musashi but simultaneously distributed concealed tax rice to the starving population.

Rumors of Yasunori’s lenient policies spread, and the hostility began to subside. By August, indigenous groups arrived at Akita Castle in succession to surrender. Although the Imperial Court initially demanded a forceful subjugation, Yasunori successfully argued that a policy of leniency was the only way to encourage the return of those driven away by previous tyranny. In March 879, the Court accepted his counsel and dissolved the army. A ceasefire was established, with the Omono River serving as the new boundary—effectively moving the border 30 kilometers north.