The Kojiki records that Emperor Sujin united the country, brought peace, prosperity and happiness to the people, and was the first to be praised as Mimakono Sumera Mikoto (Hatsukunishirashishi Mimakinosumera Mikoto) for governing the country.
『古事記』には、天下を統一して、平和で人民が豊かで幸せに暮らすことが出来るようになり、その御世を称えて初めて国を治めた御真木天皇「所知初国之御真木天皇」と謂う、とある。