He was the father of Takeichi Nishi, an Imperial Japanese Army cavalry officer who won a gold medal in the 1932 Summer Olympics and died in the Battle of Iwo Jima.
Ia adalah ayah dari Takeichi Nishi, seorang pimpinan kavaleri Tentara Kekaisaran Jepang yang memenangkan medal emas dalam Olimpiade Musim Panas 1932 dan wafat saat Pertempuran Iwo Jima.