After the mid Kamakura period when the promotion of benevolent rule became a subject of the Insei, practical middle rank nobles with full knowledge of laws, court rules, ceremony and decorums were often appointed as In no Kinshin.
鎌倉時代中期以後、徳政の推進が院政の課題となってくると、法律や有職に通じて実務に長けた中級貴族の登用が目立つようになった。