The Day of Revolution (革命の日, Kakumei no Hi?) is a manga written and illustrated by Japanese manga creator Mikiyo Tsuda in 1999. The story mainly focuses around a boy who starts to live as a girl and how his group of friends changes due to his new lifestyle. This short series was first serialized in the Japanese manga magazine Wings by Shinshokan between March 1999 and January 2001. The manga has been picked up by Digital Manga Publishing to be published in North America. The English language edition released on September 20, 2006 while the second volume was released on December 13, 2006. Also, two drama CDs have been created based on the series. The first was first released in Japan on July 28, 2001 while the second came out the following year sometime in 2002.