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In the world, マサクニ (マサクニ ) is an extremely rare unknown gender first name. Much more prevalently, マサクニ is the last name as well as the forename.
Masakni, Masakuni, 昌国, 昌邦, and 正邦
キムラ, クメダ, ハヤシ, トヤマ, イノウエ, and ヤマモト