Claim: Cinderella was written by Nari Kusakawa, the pen name of a Japanese manga artist who debuted in 2000 with the short story My Grandfather, and published by Hakusensha.
Evidence: Nari Kusakawa (草川 為, Kusakawa Nari, born 26 December in Aichi Prefecture) is the pen name of a Japanese manga artist who created The Recipe for Gertrude, Palette of 12 Secret Colors, and Two Flowers of the Dragon. She debuted in 2000 with the short story My Grandfather (マイ グランド ファーザー), published in the manga magazine LaLa DX.