The most common spelling is 直美 (straight, honest + beautiful), in this spelling it entered the Japanese top ten in 1965. It was the #1 most popular girl's name from 1968-1970 and left the top 10 after 1972.
― Anonymous User 9/6/2019
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Naomi is actually a unisex name in Japan. There are famous Japanese men and women named Naomi.