Yuu Watase is a Japanese manga artist. She debuted in 1989 at the age of 18 with the short story "Pajama de Ojama" and has since published more than 50 volumes of one-shots and long-running manga series. One of her most popular titles is Fushigi Yûgi. In 1998, Watase won the 43rd Shogakukan Manga Award in the shōjo (girls') category for Ceres, Celestial Legend. In 2008, she began her first shōnen (boys') serialization, Arata: The Legend.

Fushigi Yûgi , also known as Fushigi Yûgi: The Mysterious Play or Curious Play, is a Japanese manga series written and illustrated by Yuu Watase. It tells the story of two teenaged girls, Miaka and Yui, who are pulled into The Universe of the Four Gods, a mysterious book at the National Diet Library. It is based on the four mythological creatures of China. Shogakukan serialized Fushigi Yûgi in Shōjo Comic from December 1991 to May 1996 and later compiled the manga into eighteen tankōbon volumes.