An Azure network security service that is used to protect Azure Virtual Network resources.
Hi,
This is likely because the resource group has Japanese characters which Azure does not support.
You can view the naming rules and restrictions for all Azure resources over here:
Naming rules and restrictions for Azure resources
https://learn.microsoft.com/en-us/azure/azure-resource-manager/management/resource-name-rules
You might want to try and delete the resource group and re-create the resource group using the supported valid characters.
Best regards,
Leon