Akechi Hidemitsu was a Japanese samurai of the Sengoku period. A senior retainer of Oda Nobunaga's vassal Akechi Mitsuhide, he served Mitsuhide until the latter's death in 1582 at the hands of Toyotomi Hideyoshi.While Hidemitsu's date of birth is not known for certain, some say he was born either sometime between 1535 and 1537, or as late as 1557. Hidemitsu was the son of Tōyama Kageyuki (lord of Myōchi Castle) and Miyake Takasada (lord of Hirose Castle in Mikawa Province). He first succeeded to his father, taking the name Tōyama Kageharu (common name Rokurōzaemon); then he succeeded to his mother's birth family under the name Miyake Yaheiji, and then, marrying one of Akechi Mitsuhide's daughters, took the name Akechi Hidemitsu.