Kerokero Keroppi no Bokura no Ohimesama
Japanese title: けろけろけろっぴのぼくらのお姫さま
Type: OVA
Source: Unknown
Episodes: 1
Status: Finished Airing
Aired: 1993
Duration: 29 min
Rating: G - All Ages
Producers: Sanrio
Genres: Fantasy
Demographics: Kids

Keroleen gets teleported to a fantasy land through a magical pond. There is a handsome prince who charms her. He wants her to visit more but the boys discover that his kingdom is not a righteous one. The gang has to go save Keroleen and the fate of their town from the false prince.