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In all the world, Shingaya (Shingaya ) is an extremely rare gender-neutral first name.
Aratani, Araya, Atarasiya, Niitani, Niiya, Nitani, Nittani, Shingai, Shintani, Shinya, Singai, Singaya, Sintani, Sinya, シンガヤ, and 新谷