Nagao Ariga also spelled Nagao Aruga (有賀 長雄; 13 November 1860 – 17 June 1921) was a Japanese legal expert during the Meiji period. In addition to law, he also studied sociology at Tokyo Imperial University. During the Sino-Japanese war, he advised Field-Marshal Ōyama Iwao on issues of international law. In 1913 he accepted the invitation by Yuan Shikai, to prepare a draft constitution for the new Chinese republic, together with Ushikichi Nakae (中江 丑吉). Ariga doubted that China was ready to implement a liberal democracy and recommended a balance between monarchy and republic. Ariga also worked as a translator.
Source: “Nagao Ariga”, English Wikipedia (CC BY-SA 4.0), excerpt