Kei Aran (安蘭 けい, Aran Kei, born October 9, 1970), real name Touko Yasuda (安田 瞳子, Yasuda Touko, 야스다 도우코), is a South Korean[1] actress and former top star otokoyaku (an actress who plays male roles) of the Japanese Takarazuka Revue's Star Troupe.
Starting her career in Snow Troupe, she developed her singing and acting alongside Takarazuka legends such as Yu Todoroki, Yoka Wao and Tatsuki Kouju.
Later on, she participated in two Bow Hall performances starring Wao (Grand Shanghai and Wuthering Heights), in which she had prominent roles.
In 2000, she was transferred to Star Troupe and became the second man for Ko Minoru, Tatsuki Kouju and Wataru Kozuki.
This was followed by the role of Count Philippe de Chandon in Phantom, where she rejoined former Snow Troupe troupemates Wao and Mari Hanafusa.