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In the entire world, マサシゲ (マサシゲ ) is an extremely rare unknown gender first name. Much more prevalently, マサシゲ is the last name as well as the forename.
Masashige, 政重, 正成, 正茂, and 正重
ハジ, ネモト, オバナ, サトウ, and スズキ