The round crane mark is the official emblem of Nichiren Shoshu.
This symbol is on our Liturgy of Nichiren Shoshu book, the Sutra book, Nichiren Shoshu butsugu (altar accessories), and in Nichiren Shoshu temples around the world.
This emblem is a sacred symbol to Nichiren Shoshu tradition. Out of respect for this tradition, Nichiren Shoshu believers do not use it for personal use on social media channels or in any other ways.