, also known Hachisuka Koroku (èÂÂé Âè³Âå°Âå Â), was a daimyà Â, retainer and adviser of Toyotomi Hideyoshi during the AzuchiâÂÂMomoyama period of Japanese history. He was the son of Hachisuka Masatoshi.
The Hachisuka clan were the kokujin of the Kaità  District of Owari Province (in present-day Ama District, Aichi Prefecture). They controlled water transport on the Kiso River. Their knowledge of local terrain made them useful to the Oda and Saità  clans, although they remained independent of control of the powerful clans.
After the death of his father in 1553, Masakatsu left his hometown to serve as an attendant to lord Saità  Dà Âsan. Dà Âsan frequently relied upon Masakatsu for conflicts between those in Mino and Owari provinces. MasakatsuâÂÂs earlier name of Toshimasa matches an earlier name of Dà Âsan and is surmised to have been received from Dà Âsan. In 1556, at the Battle of Nagaragawa between Dà Âsan and Saità  Yoshitatsu, Masakatsu joined Dà ÂsanâÂÂs forces.
After death of DÃ Âsan, Masakatsu served Oda Nobunaga, under command of Toyotomi Hideyoshi, and may have participated in the building of Sunomata Castle (1567) and fought at the Siege of Inabayama (1568), also fought at the Battle of Anegawa (1570) against Azai and Asakura forces, as well as the Chugoku campaigns against the MÃ Âri.
In 1585, after Invasion of Shikoku, Hideyoshi awarded him Awa Province as a fief, but he declined in favor of his son, Iemasa, and serving instead as a close adviser of Hideyoshi.