Viscount , a.k.a. was a Japanese Shishi, and later, a diplomat. He attended a battle in the 1860s at Chà Âshà « Domain. Especially, in 1865, he was the commander in Kà Âzan-ji uprising, as Hirobumi Ito, under Shinsaku Takasugi. He also served at the Second Chà Âshà « expedition, and led the Chà Âshà « Army to win.
In the 1870s served as Japanese Minister to Rome. In 1876 concluded successfully negotiations with Italian sculptor Vincenzo Ragusa to take a teaching position at the newly opened government sponsored art school in Tokyo. Served as Japanese Consul in London in 1884-1893. In 1894, Kawase became a member of the Privy Council till his death.