concerning japanese ipod nano

All iPOds are the same no matter where there bought, made or sold. So the one bought in japan would be just like the one sold in germany, USA or UK. All iPOds have a "Language" section so you can pick your language wither its english, japan, german, ect ect.

I cant read japanese but my iPOd has some asian "Symbols" in the language sections. THeres four, I take one is japanese, one chiniese, the other 2 may be korean and some other asian country

Language (Settings > Language > languages)—All iPods with a display are multilingual, meaning you can change the default language that appears in your iPod menus and screens. You can select English, German, French, Italian, Japanese, Spanish, or other language. Don't worry; your iPod will still display song titles in their native language no matter what default language you set (for example, English song titles, artists, and albums will still appear in English even if you switch the language to Japanese or Spanish).
http://www.apple.com/support/ipod101/anatomy/2/#5