Kei Aran (安蘭 けい, Aran Kei), real name Touko Yasuda (安田 瞳子, Yasuda Touko) (born October 9, 1970), is a Japanese actress and former top star otokoyaku (an actress who plays male roles) of the Japanese Takarazuka Revue's Star Troupe. She joined the revue in 1991 and became the top star in 2007. She resigned from the company in April 2009 and is currently pursuing an acting career outside of the Revue. She is of Zainichi Korean descent and the first from such background to become the top star of the company.