These are some of my natura faves taken when I was studying in Japan, all shot with the natura classica camera and the natura 1600 film that complements it. What happens when you put the 2 together is that it gives you really fine grain, high contrast and beautiful colours even in low light conditions (I know I sound like some Fujifilm spokesperson but I'm such a big fan).
That said, how the photos turn out also depends a lot on where you develop them. I've had rolls processed in the local labs here in Singapore before and they were very disappointing. If you're ever in Japan and want to develop film I recommend the '55 DPE & Digital Station', they're a bit more pricey but I find the quality superb.