Any times I know of where a Japanese guy goes by Aki, it's part of a longer name. Here are some of the other meanings of Aki, depending on which kanji character you use: glitter/glisten bright (different kanji than the one for light) chapter of a book pleasant/cheerful
Here are some of the other meanings of Aki, depending on which kanji character you use:
glitter/glisten
bright (different kanji than the one for light)
chapter of a book
pleasant/cheerful