Mamizu Arisawa (有沢 まみず, Arisawa Mamizu, born May 18, 1976) is a Japanese light novelist from Tokyo, Japan. In 2001, Arisawa won the silver prize in the eighth installment of MediaWorks' Dengeki Novel Prize with his work Infinity Zero. Following this, the novel was published by MediaWorks under their Dengeki Bunko label, and three other volumes in the series were subsequently published. Following the end of Infinity Zero, Arisawa began work on Inukami! in April 2002 until the release of Inukami!'s last volume in September 2007. In December 2007, Arisawa began to write a new series entitled Lucky Chance!.