The term "Ofumi" refers to letters of sermons written in kana by Rennyo, the eighth chief priest of Hongan-ji Temple of Jodo Shinshu Buddhism, which were dispatched to followers throughout the country as a means of propagation.
御文（おふみ）は、浄土真宗本願寺八世蓮如が、その布教手段として全国の門徒へ消息（手紙）として発信した仮名書きによる法語。