When Nobunaga was killed in the Honnoji Incident immediately before unification of the whole country, the clan fractionalized internally and the family's vigor decreased as a powerful vassal Hideyoshi TOYOTOMI appeared.
しかし、天下統一を目前に本能寺の変で信長が討たれると内部分裂、有力家臣豊臣秀吉の台頭などで家勢は衰えた。