Final answer:
Nichiren Daishonin's search for enlightenment was a deep spiritual journey that involved commitment to Buddhist teachings and practices, eventually leading him to establish the Nichiren school of Buddhism which centers around the chant, "Nam-myoho-renge-kyo," derived from the Lotus Sutra.
Step-by-step explanation:
When Nichiren Daishonin was seeking enlightenment, he underwent a transformative spiritual journey. Like Siddhartha Gautama before him, Nichiren Daishonin's quest for enlightenment involved deep meditation and the examination of life's profound truths. While the specific details of Nichiren Daishonin's personal path to enlightenment are less widely known than those of the Buddha, it is understood that the path involved a rigorous engagement with Buddhist teachings and practices. It was through this committed practice that Nichiren Daishonin arrived at critical insights which led him to establish the Nichiren school of Buddhism.
The philosophical underpinnings of Buddhism teach that the world is an illusion, a perspective shared by other forms of Buddhism such as Zen (Chan Buddhism in China), which also emphasize meditation and mindfulness as keys to achieving enlightenment. Nichiren Daishonin's enlightenment experience affirmed the power of the Lotus Sutra and led to the promotion of its chant, "Nam-myoho-renge-kyo," as the central practice of his teachings, thereby offering a unique pathway to enlightenment that his followers could undertake.