Akechi Mitsuharu

Akechi Mitsuharu (c. 1536–1582) was a Sengoku-period warrior, cousin (or nephew) of Akechi Mitsuhide, and castellan of Sakamoto Castle in Omi Province (present-day Otsu, Shiga Prefecture). He was one of the principal commanders within the Akechi clan.

Service Under Mitsuhide

Mitsuharu played a significant military role in the Akechi campaigns, including the pacification of Tanba Province (1576–1579). As lord of Sakamoto Castle, he controlled the Omi flank of the Akechi domain and was one of Mitsuhide's most trusted lieutenants.

After the Honnoji Incident

Following Mitsuhide's assassination of Oda Nobunaga on June 2, 1582, Mitsuharu participated in subsequent military operations to consolidate the Akechi position. The decisive Battle of Yamazaki on June 13 ended in catastrophic defeat by Hashiba Hideyoshi (later Toyotomi Hideyoshi); Mitsuhide was killed fleeing the battlefield. Mitsuharu withdrew to Sakamoto Castle, where he set it ablaze and committed suicide together with his family—refusing surrender and honoring his loyalty to Mitsuhide to the end.

Significance

Although records of Mitsuharu are fragmentary, he is noted as having possibly protected Mitsuhide's surviving family members during the castle's fall. He is remembered as a faithful second-in-command who shared his lord's fate with unwavering loyalty—a quality celebrated in samurai tradition.