Wikipedia
Shizuku-chan
is a children's manga and anime series. It debuted on 2003 as a manga series that grew popular. An anime adaptation, Pururun! Shizuku-chan, was produced by TMS Entertainment and debuted on TV Tokyo in October 7, 2006. A second season called Pururun! Shizuku chan Aha debuted one year later in 2007.
A second series, Picchipichi Shizuku-chan, ran from October 2012 to September 2013. It was produced by Asahi Production and was broadcast on three Japanese Association of Independent Television Stations members and Kids Station.