The president made the appeal at the bilateral summit meeting with the Japanese Prime Minister Shinzo Abe on Friday ahead of the official launch of the fifth Tokyo International Conference on African Development (TICAD V) on Saturday.
TICAD is a major development platform on African development that discusses and produces action plans to tackle various challenges in Africa on the economy, poverty reduction and post- conflict recovery.
President Kiir reiterated the importance of infrastructure and human resource development as promoters of foreign investment in South Sudan.
Prime Minister Abe pledged to consider the request, adding that he also expects Japanese companies to expand their businesses to South Sudan.
He also said he would continue to provide assistance to South Sudan, citing the plan to construct a bridge over the Nile and to improve the river port in order to help South Sudan prosper.
The feasibility study on the bridge construction is already underway according to officials in the Japanese Liaison Office in Juba, South Sudan.
According to Abe, the operations of the Japanese engineering unit (Self-Defense Force), working under the United Nations Mission in South Sudan (UNMISS), will be expanded to Eastern and Western Equatoria States while a Japanese Embassy in South Sudan will be officially opened in July this year.