System maintenance notice on August 30, 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 10:00 a.m. to 6:00 p.m. on Sunday August 30, 2020, JST

Future maintenance plan 

Sunday September 27, 2020

Sunday October 25, 2020