Kirk here with something that may be of interested to people who need to control their blood-sugar level but would still like to enjoy some sweets.

Here’s a page from the store’s website with a Google map showing the location:

https://tenmando.com/pages/shop

And, if you prefer to read Japanese, here’s an article from the Kumamoto Keizai Shimbun about the shop.

https://www.asahi.com/ajw/articles/14479905