Don't panic! Please be advised that the Japanese dating system is yyyy/mm/dd. So, if it says 2020/10/05, it means October 5, 2020.
On average, the snacks and candies we send have 6 months to 1 year expiration period. If you feel that your snack has indeed expired, kindly send us a clear photo of the snack along with the expiration date to our support team so we can look into it.