Aiko is a very common Japanese name with a lovely meaning that is rarely heard outside the Asian community.

Aiko

Despite being etymologically unrelated, Aimi has a similar meaning to the name Amy, "beloved."

Aimi

A popular Japanese name for both sexes that's migrated to the West because of its appearance in manga and video games.

Akira

Aya, barely more than a breath, is an international favorite, with origins in several languages and cultures. Popular throughout Europe, It debuted on the US Top 1000 in 2012.
 In the entertainment industry, Aya has two international bearers: Aya Korem, an Israeli singer-songwriter, and Aya Liu, a Taiwanese actress. And actress Hilary Swank named her twin daughter Aya (and her son Ohm).
 
Aya is also a Danish name (a creative spelling of Aja) and is a highly popular choice there.
 In Arabic, Aya meaning "sign, evidence" or "verse" and is a popular name in the Muslim community.

Aina

Airi

Ayame

As an English nickname, Emi can be short for anything beginning with (or containing) the popular "em" sound, such as Emily, Emilia, or maybe even Clementine.

 As a Japanese name, it can be formed of various different combinations of kanji characters, with different meanings.

Many things to many peoples: a flower name, also spelled Hanae, to the Japanese; a Czech and Polish short form of Johana; and an alternate form of the biblical name Hannah in the US. It also means "craft, work" in Hawaiian and "glow" in Maori.

Hana

Japanese writer Haruki Murakami, well known in the U. S. , might inspire some namesakes. 

Haruki

Haruka

Hayate

Hina

Ichiro is a good classic choice for the first boy in a Japanese family. 

Ichiro

Commonly used Japanese name -- and not only for a second son. 

Jiro

Kaori is a Japanese girls' name once largely unknown but brought into the spotlight by celebrity couple Eniko and Kevin Hart, who gave it to their daughter in 2020. Kaori is easily translated in the Western World; it's got a rhythmic sound and a familiar feel, maybe since it's similar to Maori, the name of the people and language of New Zealand. But the correct pronunciation is kow-ree.

Kaori

Japanese classic with optimistic meaning. 

Keiko

In many minds this one belongs to Barbie, but with such positive meanings and international connections, can Ken make the transition to usability again?

One of several Japanese names that refer to a child's place in the family birth order. Kenji has attracted notice in the US as the name of The Food Lab chef, James Kenji López-Alt, know simply as Kenji.

Kenji

Kimiko

Kiyoko

Kaede

Katsu

Kumiko

Homophonous with Mae and May, the beautiful (literally) Mei is poised to climb the charts. The hero of the 2022 Disney/Pixar film Turning Red is a Chinese-Canadian teen named Meilin "Mei" Lee, which may boost the name ever further.

In Japan, color names symbolize human qualities (in this case, fame); name of gifted violist Midori, but also a Japanese melon liqueur. 

Midori

Mami

Miyako

Naomi was once a primarily Jewish name from the Old Testament that referenced the mother-in-law of Ruth. Because of this, it is a symbolic name given to girls on Shavuot when the story of Ruth is read in the synagogue. 
The French version is Noemie, in Italian Noemi. Naomi also has separate Japanese origins as a unisex name meaning "straight and beautiful."
 
This long-quiet Old Testament name seems to finally be finding favor with parents seeking a biblical name with a soft, melodic sound and a positive meaning, suddenly sounding fresher than the widely used Sarah, Rachel, and Rebecca. It's now more popular than ever after breaking the Top 100 for the first time in 2010. 
 
Beautiful black model Naomi Campbell and blond actress Naomi Watts have helped the modernization. Other namesakes are singer Naomi Judd and feminist writer Naomi Wolf.

Naomi

Japanese name that would have no trouble assimilating — though many would associate it with the dried seaweed used to wrap sushi. Kim Kardashian and Kanye West use Nori as a nickname for their daughter North.
 
Nori entered the Top 1000 for the first time in 2022, following the trend of "traveling lite" names, or simple, 2-syllable names ending in i such as Zuri, Ezri, and Leni that are quickly gaining popularity.

Nori

Noriko is most common among Gen X Japanese women, making it a dated choice in Japan.

Noriko

A very popular girls' name in Japan whose sound is consistent with its meaning.  Another possibility is Ren.

A pan-European short form often used as a name in its own right, Rina is sister to names like Mina and Lena, popular at the end of the 19th century and showing their pretty if slight faces again.  In the Netherlands, Rina itself is sometimes shortened to Rineke, as Tina may become Tineke.

Rina

Riko

Lovely Japanese name that would certainly be appreciated in Europe and the U.S. It was rarely used in Japan until the 1990s, and draws its current popularity from the fact that it is deeply connected to Japanese traditional culture without sounding frumpy and old-fashioned.

Sakura

A simple and pretty multicultural name: as a Japanese name, it's unisex and means "sky"; as a Korean name, it's feminine and means "conch shell".

Sora

Saki

Sayuri

Suzume

A lovely Japanese alternative to Tamara. 

Takara

Tamiko

Takashi

Taro

Unfamiliar Asian choice that can work for a parent in search of something really different. 

Umeko

An appealing Asian name with a nickname feel. 

Yuki

frauleinawesome's list "Awesome Japanese Names" of 47 great name ideas: Aiko - Yuki!