was a Japanese novelist and songwriter. He won the 122nd Naoki Prize.
Nakanishi was born Reizà  Nakanishi () in Mudanjiang, Manchukuo. He graduated from Kudan High School in Tokyo and received a degree in French literature from Rikkyo University. He lived in Zushi, Kanagawa.
He first worked on translations of French chanson songs, but while on honeymoon, he made the acquaintance of Yujiro Ishihara and became a Japanese popular song (kayà Âkyoku) writer. He is one of the main lyricists in the world of post-World War II kayà Âkyoku. He gave the world an extensive collection of works—songs such as "Kyou de owakare" and "Kita sakaba", which became big hits, but also a large proportion of unusual songs. In 1969, his total sales exceeded 10 million records. He has displayed talent in many fields, including concert and stage production, movie performance, singing, composing, translation, novel and essay writing, and cultural broadcasting (as a personality on "Sei! Yangu!" and as a regular on NHK's "N-kyà Â").
However, behind his showy life, he suffered from difficulties such as heart disease, divorce, and having to repay his elder brother's extensive debts. From those personal experiences came novels such as Kyà Âdai and Sakura no densetsu. He was a pacifist and desired reconciliation with China and Korea, and this shows in his writing style and speech.
He gave up songwriting at the end of the Shà Âwa era, and concentrated on opera production and performance and novel and essay writing. Kyà Âdai was nominated in 1998 for the 119th Naoki Prize. Nagasaki burabura-setsu won the 122nd Naoki Prize in 2000.
Recently, Nakanishi appeared as a commentator on the Japanese "wide show" Wide! Scramble! on the Asahi Television Network.
Nakanishi died in Tokyo on 23 December 2020, at the age of 82, after suffering a heart attack.