Fujimon school such as Nichiren Sho Sect preaches that people can become a Buddha by remembering (and honoring) the teachings of Buddha by having honzon (principal image of Buddha), one of Sandaihiho (the three great secret dharmas); even if they don't practice ryakko shugyo.
日蓮正宗などの富士門流では三大秘法の本尊を受持することで、歴劫修行を得なくても成仏が可能だと説いている。