Same answers as anywhere else, meet people, hostels, events

Check the Japan general first of all

I went for two weeks and got pretty lonely but I do that everywhere, too self hating to make the effort

Go to an izakaya or some expat bar.

Space Station in Amemura is normally full of ex-pats and a good time

You should have gone with Airbnb, hosts love showing their new white friend around

Go to a soapland

I think OP means female company.
wink wink

I'd live homeless in Ryukyu