Neo Ranga

Japanese Title: 南海奇皇

Plot
The Shimabara sisters (Manami, Ushio, and Yuuhi) are living on their own, with the eldest sister as their breadwinner, when a young man from the fictional Pacific island of Barou arrives with news of their long-missing brother. Their brother had married into the Barou royalty, but died, leaving the sisters as the hereditary rulers of Barou. As the rulers of Barou, they now fall under the protection of the island's god, Neo Ranga, which turns out to be a gigantic monster reminiscent of Godzilla. It follows them back to Japan, where Neoranga quickly runs afoul of the Japan Self-Defense Forces.