Most of the youngest and best looking asian SPs end up as a mistress for wealthy local asian men. They get snapped up before they go into circulation so to speak.
They get an apartment to call their own, nice clothes, money and of course end up with one client. This looks after the gentleman's needs and keeps the health risk of STD down to a minimum for both.
I imaging this custom is very old, but of course in the old days these men did not have to hide their second or third wives or girlfriends from view. It was open.
If you find one of these girls before they get snapped up it would probably be a rare event but worth the search I imagine.