But in the period of the 'haifu-kyoku' (literally, kyoku (a kind of humorous haikai without haikai conventions) with a taste of haiku), which was named by Senryu IV, senryu became popular in the context of Edo townspeople's culture in the Bunka and Bunsei eras.
しかし、四世川柳の命名した「俳風狂句」時代は、文化文政期の江戸町人文化を背景に盛んとなった。