SMOKA account registered before 31 March 2025 has been expired.
We reset all SMOKA accounts on April 1 every year.
Please register again via Online User Registration. (April 1, 2025)

Due to the System Maintenance, SMOKA service will be suspended on July 16, 2025 from 8:30 to 17:30 pm (JST). We apologize for the inconvenience (June 16, 2025).