Japanese fermented soybean product, 'Okame Natto' is set to increase prices by 15%. The planned price increase comes as Japan sees a steady rise in material and transportation costs. It's expected that the price hike will impact consumers' daily expenses as 'Okame Natto' is a staple food product in many Japanese households.

Natto is a part of the average Japanese citizen's diet and a price increase in such a staple food product speaks volumes about the current economic climate and challenges in the country. Japanese people are highly concerned about changes in cost of living, especially around food and necessities, thus this news is likely to garner significant attention.

Similar to how price surges in staple products like milk or bread in the US or EU serve as indicators of inflation and economic health, this news would be viewed with a similar perspective in Japan.