In 1582, while the Mori clan was encamped opposite Hideyoshi HASHIBA (Hideyoshi TOYOTOMI) at Takamatsu-jo Castle in Bichu Province (the Battle of Bichu Takamatsu-jo Castle), the Honno-ji Incident occurred and Nobunaga ODA was killed at Honno-ji Temple (the Honno-ji Incident).
天正10年（1582年）、毛利氏が羽柴秀吉（豊臣秀吉）と高松城(備中国)で対陣していた（備中高松城の戦い）最中に本能寺の変が起き、織田信長が本能寺にて横死した（本能寺の変）。