Akechi Hidemitsu

Akechi Hidemitsu (birth year unknown, possibly 1536; died the night of July 3, 1582 [Tenshō 10, 6th month, 14th day]) was a Sengoku-period warrior in the service of Akechi Mitsuhide, known by his title Samanosuke. He originally went by the name Miyake Yahyōji, and his origins remain unsettled: some accounts trace him to the Miyake clan, while the later chronicle Akechi Gunki instead makes him a son of Mitsuhide's uncle Akechi Mitsuyasu, hence Mitsuhide's cousin. More firmly documented is that from 1578 he married one of Mitsuhide's daughters, becoming his son-in-law and a senior retainer.

Lord of Sakamoto Castle, Deputy of Fukuchiyama Castle

After campaigning in the pacification of Tanba Province (1576–1579), Hidemitsu became lord of Sakamoto Castle in Ōmi Province, administering the Ōmi flank of Mitsuhide's domain, and is also said to have served for a time as deputy of Fukuchiyama Castle. Trusted as one of Mitsuhide's closest confidants, he was counted among the "Five Senior Retainers of Akechi."

The Battle of Yamazaki and the Fall of Sakamoto Castle

Hidemitsu took part in the Honnō-ji Incident of June 21, 1582, and was then stationed defending Azuchi Castle. On learning that Mitsuhide had been defeated by Hashiba Hideyoshi at the Battle of Yamazaki on July 2, he left Azuchi before dawn the next day for Sakamoto. That night, per the Kawasumi Taikōki, he killed Mitsuhide's wife and children, then took his own life alongside his wife as the castle fell. Beforehand, he is said to have carefully packed the castle's famed treasures — a sword by Kunitsune, a wakizashi by Yoshimitsu, and a calligraphy scroll by the monk Kidō — with an inventory list, delivering them intact to Hori Hidemasa on Hideyoshi's side rather than let them burn. This act of safeguarding his lord's treasures to the last reveals a figure far more than a merely defeated commander.

The "Lake-Crossing" Legend

A famous legend holds that fleeing from Azuchi to Sakamoto, Hidemitsu rode his horse directly across Lake Biwa — the celebrated "Lake Crossing of Akechi Samanosuke." The tale first appears in the later Kawasumi Taikōki and has no confirmed historical basis; historians believe he instead rode the shoreline road between Ōtsu and the lake, a route later embellished into a crossing of the water itself.

Alternate Names and Identification with "Akechi Mitsuharu"

While contemporary sources identify him consistently as "Samanosuke Hidemitsu," Edo-period chronicles such as the Akechi Gunki also give alternate names including Mitsuharu, Mitsutō, Mitsutoshi, and Mitsumasa. The figure remembered in some traditions as "Akechi Mitsuharu" — lord of Sakamoto Castle who remained loyal to Mitsuhide to the end — is, in the consensus of modern scholarship, generally treated as the same person as Hidemitsu.