What are the similarities between North Korea and Japan in culture, food, geographical, and historically?

https://www.quora.com/What-are-the-similarities-between-North-Korea-and-Japan-in-culture-food-geographical-and-historically/answer/%E6%A1%91%E7%94%B0-%E5%81%A5%E5%8F%B8-Kuwata-Kenji?prompt_topic_bio=1

Japan? It would be a mistake of South Korea.

They are the same ethnic group.

In North Korea, the customs of the Joseon Dynasty still remain.

N Korea women 'forced into China sex trade'