Ikeda Sumie sheds tears during the visit on July 13, 2015. [Photo/Xinhua]

For those "orphans", Japan is the motherland, but China is the hometown, said Ikeda Sumie, director general of a Tokyo support group for those Japanese returned from China.

"All the adoptive parents were the same as my own. They are not buried here, but visiting these graves is a way paying tribute to my own saviors," said Ikeda Sumie.