However, during the Sengoku period after the Onin War (1467-1477), gekokujo (an inverted social order when the lowly reigned over the elite) became more prevalent and the collapse of family status began to happen.
しかし、応仁の乱（1467年～1477年）以降、戦国時代に入ると、下剋上の風潮が高まり、「家格破壊」が実現した。