Among others, the cult kakushi nenbutsu, whose name is derived from "Jodo Shinshu" (True Pure Land Sect of Buddhism) is well known, and is said to be "ianjin," which means the heretical sect, by the mainstream of Jodo Shinshu.
そのなかでも、浄土真宗系で呪術的な隠し念仏がよく知られており、浄土真宗では異端であることを意味する異安心とされる。