The Tokyo Metropolitan Government reported 472 coronavirus cases on Friday, down 142 from a week earlier.
This marks the 22nd consecutive day of week-on-week declines in the daily tally.
The seven-day average of daily cases through Friday is 455, or 78 percent of the figure for the previous week.
Tokyo's total count of coronavirus infections now stands at 162,893.
Officials also reported four deaths, bringing the total for the capital to 2,095.