The lunch will be followed by a working session between the leaders of the G8 and seven African nations and the events are joined by leaders from the World Bank, the European Commission and the United Nations.
The Toyako summit would focus on, among other issues, climate change, the world economy and African development.
The presidents of Algeria, South Africa, Nigeria, Senegal, Ghana, Tanzania and Ethiopia are expected to talk with leaders from Britain, Canada, Italy, Japan, France, Germany, Russia and the United States on aid to Africa and other issues in the afternoon.
Many African countries have urged developed countries, the G8 nations in particular, to make good on their promises and become more committed to helping the continent fight poverty and develop the economy.
Japanese Prime Minister Yasuo Fukuda (R) shakes hands with Russian President Dmitry Medvedev during a greeting ceremony hosted by Fukuda on the first official day of the G8 Hokkaido Toyako Summit, at Lake Toyoko in Hokkaido Prefecture, northern Japan, July 7, 2008. (Xinhua Photo)