The itto ryoson comprising the Tahoto pagoda and Niseson (two world-honored ones) represents Nibutsubyoza, which is described in Chapter Fifteen, Jujiyujutsuhon (Emerging from the Earth) of Hoke-kyo Sutra (the Lotus Sutra).
宝塔と二世尊が一塔両尊になっており、法華経（妙法蓮華経）の従地湧出品第十五の章の二仏並座（にぶつびょうざ）を表す。