Note: The first part of the OVA aired on TV before being released on BD/DVD.
China Moeka
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With Japan having developed as a maritime nation, it becomes necessary to have specialized schools to teach skills essential to protect the sea. The setting is one such all-girls school. The girls who enroll here study to become blue mermaids through classroom instruction and learning practical skills. They live by the motto: In the sea we live, the sea we protect, and by the…