Finding a busty Japanese gril? Do you mind if she's a bit chubby?
Finding a slim girl with a a large bust line could be a challenge.
We don't have any specific 'busty' girl resource. Just keep an eye out on the major escort sites and search out reviews for busty Japanese girls in Japan.
There are Japanese shops that have busty girls as a specialty or fetish, but those are mostly for only Japanese people.