He wrote, "On behalf of the government and the people of the Federal Republic of Nigeria, I write to commiserate with the Government and people of Japan, following last week's torrential rain that caused floods and subsequent landslides in Western Japan, killing over one hundred and seventy six persons and forcing millions to evacuate their homes while dozens remain missing".
Tanimoto thinks he and his wife are the lucky ones.
Construction worker Fukuyoshi Doi, who is leading a group of volunteers who had gathered to help clear the road, said once they clear the mud "the rest of the work would pick".
Chief Cabinet Secretary Yoshihide Suga told a news conference Tuesday that seven others were without vital signs, and more than 50 people were unaccounted for, many of them in the hardest-hit Hiroshima area.
Rescuers conduct a search operation for missing persons in Kumano town, Hiroshima Prefecture, western Japan on July 9, 2018.
In large parts of Hiroshima, water streamed through a residential area, strewn with fallen telephone poles, uprooted trees and mud over the weekend.
Some 276,000 households now lack water supply, Kyodo news agency reported.
"The critical 72 hours have passed", acknowledged Mutsunari Imawaka, an official with Okayama prefecture, one of the worst-hit regions.
Water has started receding in most flooded areas, prompting local residents to begin cleaning up their homes.
"Without water, we can't really clean anything up". Supermarkets and convenience stores are also closed due to disrupted deliveries from road closures.
Some 270,000 households across the country have had their water supplies cut, and thousands of other homes remain without electricity.
Suga said earlier the government was spending $18 million (2 billion yen) to hasten deliveries of supplies and other support for evacuation centres and residents.
Emergency warnings for severe rain had been lifted by evening, but there were still advisories for heavy rain and landslides. However, residents are being warned to stay vigilant against heat stroke as the temperature is set to reach 34 degrees Celsius on both Tuesday and Wednesday. The Japan Meteorological Agency has reported that one area of the Kochi prefecture experienced a staggering 26.3 centimeters (10.4 inches) of precipitation in just three hours, almost as much as the average amount for the entire month of July (32.8 centimeters or 12.9 inches), typically southwestern Japan's second wettest month after June.
A man walks past a damaged street in Saka, Hiroshima prefecture.
"We will unite and move swiftly to deliver those necessities to the disaster victims by coordinating closely with local government", said Prime Minister Shinzo Abe in a meeting with the disaster response task force, also noting "the future need" to improve evacuation centers and temporary housing.
Some 75,000 rescuers and 80 helicopters have been mobilized for search-and-rescue operations in the affected areas, Suga said.