System maintenance notice on September, 2021

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 10:00 a.m. to 6:00 p.m. on Sunday September 19, 2021, JST

Future maintenance plan 

Sunday October 24, 2021

Sunday November 21, 2021