You will only become a PR after staying there for 5 years, and
that is if you manage to find countries to sponsor u to work there
for that long.
Citizenship can take you your whole life, Japanese people are very
proud of their own "race" and will look down on other races. Pure
Mainlanders even look down on Okinawa people, much more than just
"Kuching thinks KL people are snobbish" kind of thing. So if you
manage to mix into their society legitimately*, try not to identify
urself as born in Singapore unless they're really close with
you.
* There are actually many Chinese immigrants, illegal or not I
dunno, working there and they will always look out for you, like
when you buy things from shops they are working at. Don't be
surprised if someone starts answering in Chinese. You never know.
