Commuters and residents of Tokyo expressed worries about the resurgence of COVID-19 cases Thursday when the capital reported yet another record figure of 286 cases and a day after Tokyo raised its alert to the highest level of four.

"It will be tough if our activities are restricted (by another state of emergency declaration)," said Akiko Takeda, 69, as she visited the Tokyo Sea Life Park aquarium.

"It's important for people to think we must protect ourselves on our own," she said.