There are many brick & mortor and online quiltshops/sellers in North America that sell Asian/Japanese fabrics.
If you do a google search for "Asian Fabric" or "Japanese Fabric" you will find them.
Here are a few links
http://www.equilter.com/category/241/asian-collections
https://www.fabric.com/quilting-fabr...nt-fabric.aspx
http://www.konabay.com/
http://www.hancocks-paducah.com/s.nl...earch=oriental