生き別れ

いきわかれ【生き別れ】

¶私と弟は～になっている

My brother and I have been separated.

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いきわかれ【生き別れ】

a long separation during which there is no contact whatsoever.

●生き別れになる part 《from sb》 and have no contact for many years

・戦争で生き別れになった妹に 50 年ぶりに会えた. After 50 years he was reunited with the sister from whom he had been separated by the war.