For Japanese travelers, the visa will be exempted until Oct 31. However, it is not guaranteed after that.
Thus, it would be safer to apply for visa at this time.
Please check the websites below for further information.
For C3 visa (short-term visiting)
Korea visa portal
As it may take substantial time for the
process, we recommend you to apply as soon as possible.
If you need our business registration certificate for your visa application, please email us at email@example.com