All Beings in the Ten Existences Attain Buddhahood

In Chapter XVI of the Hokekyō on the “Duration of the Tathāgata’s Life,” Śākyamuni himself says that he is this Original Buddha; but not only was Śākyamuni so, but ourselves also; and the ten regions or states of existence, from the regions of the Buddhas, Bodhisattvas, Pratyekabuddhas and Śrāvakas down to those of the Devas, Human Beings, Asuras, Beasts, Pretas and Dwellers in Hell are all transformations of the Original Buddha. Nichiren represents this Buddha through the Honzon or chief object of worship in his Great Mandala. In the center of the Mandala the five characters Myō Hō Ren Ge Kyō (the title of the Hokekyō) are written, and around it the names of the Ten Worlds, which show the nature of the Original Buddha. By virtue of the all-enlightening power of the Title, each of the Ten Worlds is supposed to reveal its original sanctity, its intrinsic merit, and consequently all beings represented in the Ten Existences attain Buddhahood.

Petzold, Buddhist Prophet Nichiren , p 23