In 1181, at the height of his power, Kiyomori collapsed with a fever so intense that, per the Tale of the Heike, water evaporated on contact with his body. His dying words demanded Yoritomo’s head be placed before his grave. He died at 64, consumed by hatred. Four years later the Taira were annihilated at Dan-no-ura — the very image of ‘the mighty must fall.’