One Japanese name that feels Western, though not quite American. 

Botan

Hotaru

Mio is a lovely Japanese <a href="https://nameberry.com/girls-names">name for girls</a> that has migrated beyond its native country. One Berry reports several young girls named Mio in Australia, and the name has potential in the rest of the English-speaking world for parents who want to move beyond Mia and Maya.

This Old Testament female name has been one of the most popular <a href="https://nameberry.com/girls-names">girls’ names</a> in Israel over the last decade. Also highly popular in Spain, Portugal and the Netherlands, and a new entrant to the US Top 1000, it may be misunderstood here as an attempt to streamline and feminize the more familiar Noah – although it's a separate name with a separate derivation.

 Now for the confusing bit... There is a female figure in the Old Testament named Noa or Noah, whose name derives from the Hebrew No'ah, meaning "motion". The popular Biblical male name Noah (sometimes spelled as the streamlined Noa) is derived from a different Hebrew name: Noach "rest, repose" – although confusingly they are often written the same in English. 

 Noa is the modern Hebrew spelling of the female name, but it is also found as a variant spelling of the male name Noah – popular in countries including France, Croatia and Bosnia and Herzegovina. 

 Complex backstory notwithstanding, Noa's rise to the charts indicates increased interest in this sleek moniker.

Piano

Well-used in Japan, this name refers to the suzu, a tiny metal bell often placed in a silk charm bag and attached to a girl's undergarment so that a lovely tinkling sound is heard as she moves, and originally thought to frighten demons.

Suzu

If you're prone to pondering the questions of the universe, this might be the name for you.

Tetsuya

futaba

iroha

iruru

kiyomi

onpu

susumu

tsumugi

tsuruya

いるる

いろは

おんぷ

きよみ

すすむ

すず

つむぎ

つるや

てつや

のあ

ぴあの

ふたば

ほたる

ぼたん

みお

ピアノ

双葉

彩羽

蛍 

進　

鈴　

音符

seaslug's list "Japanese names with kanji" of 37 great name ideas: Botan - 音符!

Japanese names with kanji

includes some kanji readings, but with most names there are many different kanji combinations you can use. some of these will definitely be for-fun,"kirakira" names that may not work for real people and may be confusing for the average Japanese person to read.