Rennyo (1415-1499), the 8th head-priest of Hongan-ji Temple, who emerged in the late Muromachi period, established an organization called Kou against the backdrop of the growth of the public at the time, provided the opportunity for people to learn the teachings equally and to come together, and wrote "Ofumi (Gobunsho)" explaining the teachings of Shinran in plain words and disseminated it widely to the public.
室町時代の後期に登場した本願寺8世の蓮如（1415年-1499年）は、当時の民衆の成長を背景に講と呼ばれる組織を築き、人々が平等に教えを聴き団結できる場を提供し、また親鸞の教えを安易な言葉で述べた『御文（御文章）』を著作し、一般に広く教化した。