It might be troublesome but I have no choice but to do it via mail.
You can save your time to go to the city hall, and sending it via mail might be easier.
Let's call the city hall first and check what we need in advance.
Hello. I'd like to ask you about the branch office of the city hall.
Yes, you mean the branch office in front of the station, right?
I'd like to go get a copy of my resident's certificate and a certificate of my seal impression. Do they open on Saturdays and Sundays?
Yes, they are open in the morning on the second and fourth Saturday, and the first Sunday, of each month.
It depends on the branch office, but they may not be able to take care of the applications right away on Saturdays and Sundays.
Are there any cases that they can't issue documents right away?
Please contact your nearest branch office directly for details.
Okay. Please give me the phone number for the branch office in front of Mitaka Station.
Of course. The phone number for the branch office in front of Mitaka Station is 12-3456-7890.