As a result of the development and expansion of such Tomo system, by the latter half of the fifth century, a system was organized in which the Tomonomiyatsuko led the Tomo.
そのようなトモ制の拡大・発展の結果、5世紀後半には、さらにトモノミヤツコ（伴造）がトモ（伴）を率いるという体制も整備された。