Career
He was the sport"s 25th yokozuna. Nishinoumi was promoted to the top makuuchi division in May 1906. He was awarded a yokozuna licence by the house of Yoshida Tsukasa in February 1916 after winning a championship at January 1916 tournament.
He was 36 years old at the time of his promotion, making him the oldest wrestler to be promoted to yokozuna in the 20th century.
He favoured the yokozuna dohyō-iri (yokozuna ring-entering ceremony) style that has come to be known as Unryū. After his retirement, he was an elder known as Izutsu and produced many top division wrestlers, such as yokozuna Nishinoumi Kajirō III. He eventually committed suicide by hanging on January 27, 1931.
His adopted daughter"s sons are Sakahoko Akihiro and Terao Tsunefumi.