Nintendo's customer service Twitter account for Japan has issued a reminder that it will be ending credit card and prepaid card support for the 3DS and Wii U next month on 18th January 2022, 9 AM JST.
The company previously announced these changes for 3DS and Wii U users in Europe, Australia and New Zealand back in 2019. Here's a Google translation of the latest social media update:
"Credit cards and transportation electronic money will no longer be available at the Nintendo eShop on the Nintendo 3DS Series / Wii U after 9am on Tuesday, January 18th next month. If you want to add more balance after that, please use the Nintendo Repaid Card (number)."
As noted, users will still be able to top up their balance with eShop cards, and can continue to make use of funds on shared NNID accounts. Have you made any transactions on the 3DS and Wii U eShops in recent times? Tell us in the comments below.