Nope
Yes. The DS lite is not region locked, a Japanese model will play DS games from the US.
Yes, but most games are only in Japanese. so if you know Japanese go for it!
Yes, you can, DS games are region free.
yes any language games
Yes, they do since Nintendo DS games are not region locked
Yes. DS games are not region locked.
Yes.
If you have a Japanese System then it will work. IE iF you import a Japanese DS game, then you need to play the game on a Japanese DS.
Yes, the game will be in Japanese though.
Yes you can unless if their DSi Enhanced the game only plays on the region the system is from.Other than that DS games aren't region locked making them playable on any DS, DS Lite, or DSi but I'm not sure about the 3DS.
i tried it and i cannot play Japanese games, im still looking for a solution.
DS games are region-free, a Japanese DS game will work fine on a DS from the US.