My Bride is a Mermaid

The story of My Bride is a Mermaid revolves around a young teenage boy named Nagasumi Michishio. One day during his summer vacation at Seto Bay, Nagasumi is saved from drowning by a mermaid, Sun Seto. Under mermaid law, however, either the mermaid whose identity was revealed, or the human who saw the mermaid, must be...