Hmm interesting concept. We can create a caste system. We'll call the lowest level Indians Dalit and maybe the Australian born Indians Brahims.
Legit advice:
Try brothels that might be located in areas with more Indians. Chances are the girls working there would be less likely to reject Indian customers given the demographic. No way Ginza would adopt this system given the cost to benefit ratio even if you offer to build the system for free.
Given a high percentage of their customers are Asians anyways. Adopting this system is not worth their time.















