Juzimura rebellion

The Juzimura rebellion were the two revolts and subsequent slaughter of thousands of "radical" worshipers of Chantea and their displaced ronin allies by the government forces of Wa in the mid-1700s on the Wa Calendar.

First Rebellion
Although the shogunate of Wa had already banned the worship of the western god Chantea, daimyo Bokika Hokio of Hotomori Province in the south of Tsukishima openly gave priests of Chantea sanctuary in his lands. He saw nothing wrong with their harvest deity, and as nephew of the shogun, he did not fear a backlash.

Despite this, in Wa Year 1753 (1335 DR), the then shogun led a force of 15,000 samurai to Juzimura and surrounded Juzimura Castle. Its defenses proved impenetrable, and weeks of siege and bloody yet futile fighting ensued. Finally, the shogun presented a deal: if Hokio and his officers surrendered, they would retain their status. As their supplies were running out, Hokio accepted this. However, the shogun relocated Hokio to distant Fochu Province, while the priests of Chantea were executed.

Second Rebellion
After Matasuuri Nagahide became shogun the previous year and instituted various xenophobic policies, he declared his intention to eradicate every trace of the Chantea faith from the country. In response, in Wa Year 1755 (1337 DR), a coalition of followers of Chantea and a band of militant displaced ronin seized control of Juzimura Castle again, brandishing their holy symbols in defiance.

The shogun sent his troops to purge the castle of its inhabitants and after a brief siege they slaughtered and executed thousands of the rebels. Moreover, they destroyed the castle and left it in ruins. This was believed to the final stand of the followers of Chantea and the cult was officially considered eradicated.

Aftermath
Subsequently, the shogun declared the worship of Chantea punishable by execution and denounced the deity herself as illegal. The people of Juzimura avoided the ruins and no Chantea cultists were believed to be actively practicing their faith in the area, though they might be doing so secretly in other isolated parts of Wa. Inquisitors hunted ruthlessly for the cult, such as Yuminoi Bowida in Fochu Province. Nevertheless, Jutei-Ni, wife of daimyo Matasuuri Kimmu, advocated for the Chantea cults to be accepted as an official religion.

Background
The Juzimura Rebellion seems based on the Shimabara Rebellion in Japan, 1637/8, an uprising by largely Christian peasants and ronin against the daimyo of Shimabara Domain that was crushed and led to persecution of Christianity in Japan.