Japan's new Prime Minister Naoto Kan has called for good governance in Afghanistan to make sure that Japanese aid money is used effectively.
He made the comments during a meeting with Afghan President Hamid Karzai, who is on a visit to Japan.
Japan - one of Kabul's biggest donors - last year pledged $5bn in aid for Afghanistan over five years.
Mr Karzai promised Mr Kan the aid would be used for the development and stability of Afghanistan.
Earlier, the Afghan leader met Japanese Emporer Akihito. He is also due to speak at a seminar and visit the Hiroshima Peace Memorial for the victims of the US atomic bombing before leaving Japan on Sunday.
Mr Karzai is the first foreign leader to meet Mr Kan since he took office earlier this month.
