Keiko Nishi(西 炯子Nishi Keiko) is a Japanese manga artist born on 1966-12-26 in Ibusuki, Kagoshima Prefecture, Japan. After graduating from Kagoshima Prefectural Ibusuki High School, she attended Tsuru University where she graduated with a degree in Japanese literature. While still attending Tsuru University, Nishi made her professional manga debut with her story Matte Iru yo in Shogakukan's manga magazine Petit Flower.