Aso Koretane served as a sengoku daimyō of Higo Province during the Sengoku and Azuchi-Momoyama periods. The Aso clan served as the high priests of the Aso Shrine in Higo.
In 1540, Koretane was born as the son of Aso Koretoyo.
In 1583, his older brother, Aso Koremasa, died without an heir so Koretane inherited the headship of the clan. In 1584, Koretane died so he was succeeded by his eldest son, Aso Koremitsu, who was only two years old at the time.
Blamed for instigating the Senboku Uprising in the sixth month of 1592, the young Koremitsu was killed by Toyotomi Hideyoshi. The death of Koremitsu marked the end of the Aso clan as a sengoku daimyō family but Koremitsu’s younger brother, Aso Koreyoshi, was rescued by Katō Kiyomasa and the clan was restored to its role as the high priests of the Aso Shrine, preserving the bloodline of the clan.
Koretane’s grave was originally on flatland near the residence of a samurai family known as the Hama-no-yakata in the town of Yamato in Kumamoto Prefecture. On a hilltop, it now provides a clear view of the Hama-no-yakata and his memory is warmly referred to as Otatcho-san.