I think you mean the OVA then?
At least it's a little bit more for adults. Also the style is less like Tezuka and a tad more realistic. I don't like it very much, but it's worth a watch!
There are 10 Episodes and you can buy them in almost every language. English, French, German. They are also downloadable, of course. *cough*
Ah yes, and there is a movie too!