Nichiren Daishonin states in “The True Entity of All Phenomena”:
Although I, Nichiren alone, at first chanted Nam-Myoho-Renge-Kyo, two, three, and a hundred people gradually began to chant and propagate it. And so it will continue into the future. Indeed, this is none other than the principle of “emerging from the earth”. Just as an arrow aimed at the vast earth will never miss its target, the entire Japanese nation will chant Nam-Myoho-Renge-Kyo, at the time of kōsen-rufu. At this point, you must establish a reputation as a votary of the Lotus Sutra and entrust your life to it.