In 1582, Hideyoshi’s army besieged Takamatsu Castle, held by Shimizu Muneharu for the Mōri clan. Hideyoshi offered peace on terms that included Muneharu’s death. Muneharu offered his own life in exchange for the lives of the castle’s soldiers.
On the fourth day of the sixth month, he cut himself open on a boat before the castle. His farewell poem reads: Ukiyo o ba ima koso watare mononofu no na o Takamatsu no koke ni nokoshite. Now I cross this fleeting world, leaving a warrior’s name in the moss of Takamatsu.