Natsuki Mizu (水夏希 Mizu Natsuki, born 1972) is the former top star (otokoyaku) for Snow Troupe of Takarazuka Revue from 12/24/06 to 09/12/10. She joined the company in 1993 and became the top star in December 2006 upon the resignation of Hikaru Asami. She is from Chiba-shi, Chiba-ken and her birthday is August 16. Her nickname is Mizu and Chika.