In the entire world, マサウミ (マサウミ ) is an extremely rare unknown gender forename. Much more frequently, マサウミ is the last name as well as the forename.
Masaumi, 正海, and 雅海
バン, サトウ, and ヒラバヤシ
) is an extremely rare unknown gender forename. Much more frequently, マサウミ is the last name as well as the forename.