Ee ja nai ka

'isn't it good') was a complex of carnivalesque religious celebrations and communal activities, often understood as social or political protests,[1] which occurred in many parts of Japan from June 1867 to May 1868, at the end of the Edo period and the start of the Meiji Restoration.

Gifts were exchanged, youth groups organized mass dances which included cross-dressing, elaborate costumes, or not wearing clothes at all.

The term ee ja nai ka was a refrain in popular songs performed during these activities and was therefore later chosen as their title.

It has been suggested that religious activists, such as priests and itinerant preachers, played a major role in fabricating the "amulet showers", and some suspects were even caught in the act by alert officers.

Disappointment regarding the lack of governing political leadership, disgust at Western and Christian foreigners, and other signs of social/political critique were frequently displayed.