Any person who embraces Myoho-renge-kyo will gain the fruit of Buddhahood

Now in the Latter Day of the Law, any person—whether wise or ignorant, priest or lay believer, or of high or low position—who embraces Myoho-renge-kyo and practices it in accordance with the Buddha's teaching cannot fail to gain the fruit of Buddhahood. 21/3

The Writings of Nichiren Daishonin
The Teaching, Practice, and Proof
Written to Sammi-bo on March 21, 1275