Nagi is of Japanese origin and means "naive" or "innocent". It's often used as both a given name for boys and girls, although it's more commonly used for males in Japan. The name has gained international popularity due to its use in various forms of media, such as anime and manga. In some cases, the name may also be written using different kanji characters with similar meanings.
"Nagi experienced peak popularity in the early 2000s with 8 births in 2005 and several years of 7 births between 2006 to 2008. However, after 2009, its prevalence declined with most years seeing only 5 or 6 births until 2021 when it rose again to 8 births."