Kei Mizusawa is a seiyuu affliated with Yellow Tail from Nagasaki, Japan. She is mostly known for her work in Visual Novels (especially eroge, under the name "Rino Kawashima").
- Kohaku in Aoi Shiro
- Chronos in Chrono Clock
- Kei Sakurai and Beatrice Waltrud von Kirscheisen in Dies Irae
- Anna Reticle in Dracu-Riot!
- Ishikawa Goemon Eiyuu Senki: The World Conquest
- Haru Usami in G-Senjou no Maou
- Asako Kusakabe in Grisaia no Meikyuu
- Clarissa Harfouch in Infinite Stratos
- Shuu Yu/Zhou Yu in KoihimeMusou
- Margit Eberbach in Maji de Watashi ni Koi Shinasai!
- Machi Yatsuzuka in Mashiro-iro Symphony
- Mary Clarisse Christie and Henry Irving in Shikkoku no Sharnoth
- Ophelia U Diefenmaker in Soranica Ele
- K-86X in Super Heroine Chronicle
- Airi Hasekura in Ushinawareta Mirai O Motomete
- Celia Cumani Aintree in Walkure Romanze