In 1582, when Nobunaga was killed by Mitsuhide AKECHI in the Honnoji Incident, he served under Hideyoshi HASHIBA (later Hideyoshi TOYOTOMI) along with his father and brother, and when Hideyoshi held a funeral ceremony for Nobunaga on November 10, 1582 at Daitoku-ji Temple in Kyoto, Terumasa carried the coffin with Hidekatsu HASHIBA.
天正10年（1582年）、本能寺の変で信長が明智光秀に弑されると、父兄と共に羽柴秀吉（のちの豊臣秀吉）に仕え、同年10月15日(旧暦)、秀吉が京都大徳寺で信長の葬儀を催すと、輝政は羽柴秀勝とともに棺を担いだ。