Japan's health ministry confirmed 992 new cases of the coronavirus in Tokyo on Sunday, up 193 from a week ago.
The daily tally has marked the first week-on-week increase in 33 days.
Officials also reported eight deaths in the capital.
The number of seriously ill patients on ventilators or ECMO heart-lung machines was 13, down three from Saturday.
Nationwide, 14,239 new infections and 107 deaths were confirmed on Sunday.
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