South Korean President Lee Jae Myung has held his first full summit with Japanese Prime Minister Shigeru Ishiba in Tokyo.

On his first official visit to Japan since taking office in June, Lee met Ishiba at the premier's residence in Tokyo to discuss bilateral ties between the East Asia neighbours, including closer security coordination with the United States under a trilateral pact signed by their predecessors.

President Lee Jae Myung's visit is expected to spotlight trade, alliance costs and North Korea as he seeks to set the tone with Trump's second-term White House.