帰国 きこく子女 しじょ
kikokushijo

Noun

1. child who has returned to Japan after living abroad; returnee child; (Japanese) person who lived abroad during (part of) their childhood

帰国 きこく子女 しじょがあの くみ なか むのは むずかしいよ。
kikokushijoga ano kumino nakani tokekomu nowa muzukashiiyo.
It's difficult for returnees to blend in with that class.