My cousins were interesting. Half Japanese and the oldest born there, lived there five years. Most Japanese featured, most language skills, had a slight accent, now totally American. The middle sis looked mostly jap except for filling out to about 5’11”. Decent Japanese as a child, worked as an interpreter as an adult, married jap and lived there for a while but still no accent. The youngest was born here, totally American looking just a little tanner than the rest of the family