Osaka Prefecture logged a record 1,209 new coronavirus cases on Friday, marking the fourth consecutive day that the daily figure has exceeded 1,000.
Hyogo Prefecture also announced its highest daily tally of 510 cases.
Meanwhile, Tokyo confirmed 667 new cases, marking the 16th consecutive day the daily figure has exceeded the number from the same day in the previous week.
The number of seriously ill COVID-19 patients in the capital increased by six to 43.
The average number of new infections in Tokyo over the past seven days was 542, up by 22.9% from the previous week's average of 440.9, according to the Tokyo metropolitan government.
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