However, with the onset of the Sengoku Period (Period of Warring States) in Japan, the shugo and shugodai in turn forcefully oppressed the hikan in the provinces and in addition, through a feudal vassal system there was a power shift to Sengoku daimyo (Japanese territorial lord in the Sengoku period).
しかし、戦国時代(日本)に入ると、守護や守護代が次第に武力を以って他の被官国人を滅ぼし、または臣従させることで戦国大名と化した。