Once you get your voucher you can make an appointment in Meguro at any vaccination location. Call 0120-102-654 and press 3 for English and they can set up everything for you. Vouchers are mailed automatically, but f you have not received your voucher within the time period mentioned above visit the Infection Prevention Section. Specifically the COVID-19 Vaccination Section (Grand Conference Room) at the Meguro City Office and they can help you. There is English speaking staff.