System maintenance notice on June 28, 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 June 28, 2020, JST

Future maintenance plan 

Sunday July 19, 2020

Sunday August 30, 2020