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New!  2025/04/24  
Please note that the service will be temporally stopped between April 27(Sun.) 10:00 a.m. and April 27(Sun.) 01:00 p.m. of the Japan time for system maintenance.
2024/03/04  
Mobile version released
2022/01/27  
Please note that the service will be temporally stopped between January 30(Sun.) 10:00 a.m. and January 30(Sun.) 10:30 a.m. of the Japan time for system maintenance.