Many people have gathered in Japan's southwestern city of Fukuoka to bid farewell to the doctor and aid worker killed in Afghanistan last week.
The funeral for Tetsu Nakamura was held in his home prefecture on Wednesday.
Nakamura spent years in Afghanistan offering humanitarian support and helping with water projects. He was fatally shot by unidentified gunmen while traveling by car last Wednesday in Jalalabad, in the eastern province of Nangarhar. He was 73.
Nakamura's body returned to Fukuoka Prefecture on Monday. Police say an autopsy on Tuesday showed that he died of blood loss from multiple bullet wounds.
The body was then taken to his home in Omuta City for quiet time with his family.
Nakamura was the representative in Afghanistan of the Japanese nongovernmental organization Peshawar-kai.
The group's chairman Masaru Murakami released a condolence letter that was read out at the funeral.
He said he is not prepared to accept Nakamura's death, and overwhelmed by grief no matter how hard he tries to stay strong.
Murakami said he will continue to speak with Nakamura in his heart while offering support to the people of Afghanistan and others around the world who wish for peace.
Nakamura's son Ken, on behalf of his family, released a statement that was also read out at the ceremony.
He said his family is shocked and deeply saddened, but grateful that so many people have shared in their grief and given them words of encouragement.
He added that he was asked to take good care of his mother and family whenever his father left for Afghanistan.
He said he learned from his father to value people's thoughts, determine what's really necessary and do everything possible to achieve it. He vowed to keep the lessons in mind for the rest of his life.