Mizuiro Jidai(水色時代Aqua Age) is manga series which was serialized in 1991 by Shogakukan Inc. in the shōjo manga magazine "Ciao". An television anime version ran for 47 episodes in 1996/1997 on TV Tokyo. During the run of the anime a continuation of the story called "Shin Mizuiro Jidai" was run in Ciao Magazine. The series was made into a musical in 2001 and a cast recording was released. It is known as Aqua Age or the Blue Green Years in English. (The title has a meaning similar to the English idiom Salad days.)