Japan's health ministry says it confirmed 11,189 new cases of the coronavirus in Tokyo on Saturday, down 7,540 from a week ago.
The daily tally has marked a week-on-week decline for four straight days.
The ministry also reported 21 deaths in the capital.
The number of seriously ill patients on ventilators or ECMO heart-lung machines was 46, down two from Friday.
Nationwide, 107,465 new infections and 292 deaths were confirmed on Saturday.