The twelve ranks were Daitoku, Shotoku, Dainin, Shonin, Dairai, Shorai, Daishin, Shoshin, Daigi, Shogi, Daichi, Shochi, with silk fabrics of each color corresponding to the rank.

The terms 'the Land of the Rising Sun' and 'the Land of the Setting Sun' are simply Buddhist terms which refer to the east and the west, as "Daichidoron" (Commentary on the Great Wisdom Sutra), an annotated edition of "Makahannyaharamitashingyo" (The Great Treatise on Perfection of Wisdom), says that the land of the rising sun is the east, and the land of the setting sun is the west.

The "Daichidoron (Commentary on the Great Wisdom Sutra, "摩訶般若波羅蜜多経," literally translated to the "Heart of the Perfection of Transcedent Wisdom")" written at that time indicated that such expression as the land where the sun rises only referred to the East of China, but some people mention that the expression of the King of Wa was avoided.

Also, as the book says, '内官有十二等 一曰大德 次小德 次大仁 次小仁 次大義 次小義 次大禮 次小禮 次大智 次小智 次大信 次小信 員無定數,' his country had the Kan I Junikai (twelve grades of cap rank) system.

(The terms 'the Land of the Rising Sun' and 'the Land of the Setting Sun' appeared in Buddhist scriptures of those days [such as "Daichidoron" (Commentary on the Great Wisdom Sutra), the annotation of "The Great Treatise on Perfection of Wisdom"]; for example, "the term 'Land of the Rising Sun' refers to the east, and the term 'Land of the Setting Sun' refers to the west."