Following a surge in new cases and hospital beds quickly reaching capacity, the government declared a state of emergency for Tokyo and surrounding prefectures Kanagawa, Saitama and Chiba.
Restrictions focus on restaurants and bars, which will now be ordered to close at 8 PM.
Unlike the declaration in April-May 2020, schools will remain open and so will movie theaters and gyms. Sporting and cultural events can still be held though the attendance must be controlled to under 5,000 people.
The declaration could be extended if the number of cases do not drop below a certain level, which in Tokyo would be 500 cases per day.