The cultivation of indigo plants and indigo dyeing were actively carried out mainly along the Yura-gawa River since the fifteenth century; a record still remains that indigo-dyed fabric was rendered to the manor in 1496.
15世紀ごろからアイ(植物)の栽培と藍染めが由良川沿いを中心に盛んに行われており、1496年、藍染めの布を荘園に納めたとされる記録が残っている。