Regular citizens on the streets of Tokyo said they were nervous about what a Trump presidency would bring in terms of trade ties and more.
"It makes me worried about the future, not just in terms of the economy but that this might spread to other issues," said Kazuko Ogasawara, a 37-year-old office worker.
Takato Fujime said he was calmer about the Trump presidency, adding he was not too alarmed by the comments.
"I wasn't surprised by his remarks but I wonder whether he actually has the power to go through with his threats," the 32-year-old said.
On Wednesday, the president-elect called out Japan — one of the U.S.'s most important allies and trading partners — as an example of a country where America made "bad deals."
"We have hundreds of billions of dollars of losses on a yearly basis — hundreds of billions with China on trade and trade imbalance, with Japan, with Mexico, with just about everybody. We don't make good deals anymore," he said.
Officials, meanwhile, emphasized the importance of strong trade ties between the two countries.
"Robust trade and investments serve as the main source for a vibrant Japan-U.S. economic relationship," Japan's Chief Cabinet Secretary Yoshihide Suga told journalists in Tokyo. "This is free trade, something that the United States advocates, and we believe [Trump] will continue to push forward these things."
Suga, who is the government's main spokesman, went on to use U.S. government statistics to underline Japan's importance to America: Japanese investment in the U.S. stands at $411 billion and has created 840,000 jobs.
"I think we can say that Japanese companies are already being recognized as good corporate citizens in the United States," Suga added.