However during the middle of the 11th century shoens spread rapidly and the armed conflicts between shoen koryos (public lands and private estates) in various provinces often happened, and many bushi were appointed to shokan (an officer governing shoen) of shoen or gunji (district managers), goji (a local government official under the ritsuryo system) and hoji (an officer governing koryo, or public land) of koryo (public lands) as the managers of tax collection, police activity and justice for shoens or koryo such as gun, go, and ho; consequently the bushi were established as the managers of public lands who owned these lands.
しかし11世紀半ばに荘園の一円化が進み、諸国の荘園公領間で武力紛争が頻発するようになると、荘園及び公領である郡、郷、保の徴税、警察、裁判責任者としての荘園の荘官(荘司)や公領の郡司、郷司、保司に軍事紛争に対応できる武士が任命されることが多くなり、これらを領地とする所領経営者としての武士が成立したのである。