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In the world, Doai (Doai ) is a rare gender-neutral given name. The given name Doai is habitual in Japan, where it is a rare feminine name, Vietnam, where it is a very rare masculine name, and the United States, where it is an extremely rare mostly masculine, but infrequently female name. Not in comparison with a country's population, it most frequently occurs in Japan, Vietnam, and India. Likewise, Doai is the last name as well as the forename.