Xbox One users in Japan can get Japanese letters by using the “Xbox One Letter Service.” This service allows users to send Japanese text messages to friends and family members on their Xbox One consoles. The service is available through the Xbox Live app. To use the Xbox Letter Service, you must first create an account on Xbox Live. Once you have an account, you can find the “Xbox Letter Service” icon in your console’s main menu. From here, you can sign in with your account information and start sending letters. Each letter sent costs $1 per message. You can send as many messages as you like per day, and each message must be sent in a separate language. You cannot use the Xbox Letter Service to send messages that are not in English or Japanese. If you have any questions about this service or want to learn more about how it works, please contact our customer support team at 1-800-853-4453 or via email at xboxone@microsoft.com. Thank you for using the Xbox Letter Service!