Sera Myu is a series of 29 musicals which were preformed in many places in Japan between 1993 and 2005. Sera Myu is broken up into stages. Japanese fans usually split them into three stages but Americans fans split them into four. I'll be using the four stage method which divides these musical by the actress who was playing Sailor Moon at the time.
These musical took the stories of the anime and manga and expanded them including singing, dancing, time travel plays, and even occasionally stories of their own.