System maintenance notice on September 20, 2020

System maintenance on our service is scheduled as follows. During the maintenance period, our service will not be available. We apologize for any inconvenience caused.

Maintenance period:
from 9:00 a.m. on Sunday September 20 to 3:00 a.m. on Monday September 21, 2020, JST

Future maintenance plan 

Sunday October 11, 2020

Sunday October 25, 2020