North Korea
Japan tried to suppress Korean traditions and culture and ran the economy primarily for its own benefit. Korean resistance groups known as Dongnipgun (Liberation Army) operated along the Sino-Korean border, fighting guerrilla warfare against Japanese forces. Some of them took part in allied action in China and parts of South East Asia. One of the guerrilla leaders was the communist Kim Il-sung, who later became the first leader of North Korea.
Eternal leaders of North Korea
The functions and powers previously belonging to the President were divided between three officials: the head of government, the Premier of North Korea; the speaker of the legislature, the Chairman of the Presidium of the Supreme People's Assembly; and the head of the military, the Chairman of the National Defence Commission (replaced by State Affairs Commission of North Korea in 2016) and Supreme Commander of the Korean People's Army, all of which are currently held by Kim Il-sung's grandson, Kim Jong-un.