I believe it's a school teen age kids at least 3 guy and at least the same amount of girls if not more of each one of the kids the mc has had survival training and the other 2 boy are dicks, one of the boys(not the mc) ends up giving the other guy(again not mc) and the mc ends up adding him and the girls and being them pregnant and it turns out it was a old ww2 japanese island and they find a hanger with an old plane and possibly a old radio if I remember more I'll post it here.
