A citizens' group has screened a documentary in Tokyo about Tetsu Nakamura, a Japanese doctor and humanitarian worker who was shot dead in Afghanistan.
About 200 people attended the event at a university on Sunday.
73-year-old Nakamura was shot to death on Wednesday, after being ambushed by a group of unidentified gunmen in the city of Jalalabad in the eastern province of Nangarhar.
He was the representative of the Afghan branch of Peshawar-kai, a non-governmental organization based in the city of Fukuoka, southwestern Japan.
The film depicts Nakamura working to build irrigation canals for Afghans affected by drought. It shows barren land turning into green farmland.
In the documentary, Nakamura speaks about the importance of carrying out projects in harmony with nature and in cooperation with the local people.
Citizens' group representative Makiko Irisawa said Nakamura showed through his action what's important for peace and his achievements will never fade away.
A man in his 70s from Kanagawa Prefecture said he cried many times after learning about Nakamura's death. He expressed hope that the Japanese doctor's activities will be carried on by others.