Yanase Natsumi(やなせなつみ/柳瀬 なつみ), born May 10, 1971, is a Japanese voice actress from Tokyo, Japan. Her former stage name was Yanase Hiromi (柳瀬 洋美). She is currently a freelancer. Maki Izumi is an alias Yanase Natsumi has used when working on adult games/anime. She also works as a screenwriter, lyricist, and director under the name "Mizushiro Yuu(水城 ゆう)".