Akira is a popular Japanese name for both sexes that's migrated to the West because of its appearance in manga and video games.  Akiro is a related name popular for boys.

Akira

Strong Japanese name with a hopeful meaning.

Arata

A relatively popular Japanese name with cool nickname potential and a vibrant sound.

Daisuke

Upbeat Japanese name. Video game fans may recognize Genji as the name of a character from Overwatch.

Genji

This name with a beautiful meaning can be used for girls as well as boys.

Hikaru

In Welsh, a diminutive of Iorwerth. As a Japanese name, Iori stands alone.

Iori

Kazuya

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

Unisex Japanese name more often given to boys.

Makoto

Minoru

A very unusual biblical name, Rei was one of David's most loyal supporters.

Satoshi

Common name among Japanese men that can be written with a variety of kanji, giving it different meanings.

Shin

Taiga has two origins. As a word name derived from Turkic languages via Russian, it refers to the snow forest of the Arctic regions, making it an evocative nature name.
It is also a unisex Japanese name. Depending on the spelling, one meaning can be "large river".
Either way, it's worth noting that it sounds very similar to Tiger.

Taiga

Common Japanese name associated with contemporary artist Takashi Murakami.

Takashi

Takeshi

A name most common among middle-aged Japanese men.

Tsuyoshi

Wataru

Yamato

chikara

fumito

fuyuki

gaku

hajime

haruomi

hiraku

homare

inori

junpei

kenshin

kimimaru

konan

kotarou

kotobuki

kyou

kyouhei

kyousuke

kyoutarou

manabu

masamune

miroku

momotarou

musashi

noboru

nobunaga

osamu

ranmaru

reiji

rintarou

ryouma

ryouta

ryuu

ryuuzou

sakutarou

sasuke

shigeru

shougo

souichirou

sousuke

suguru

taisei

tasuke

tetsu

tohru

tokimune

toraji

toraki

tougo

tsukasa

yasushi

yoshinori

yudzuru

yukimitsu

yukinari

yutaka

yuzuru

seaslug's list "old fashioned japanese boy names" of 80 great name ideas: Akira - yuzuru!

old fashioned japanese boy names

names with 和風 (japanese style) and 古風 (old-fashioned) feeling. 古風 と 和風 な 男の子 の 名前