Asian Code of the Duelist Release Promotion

Similar to the Stock Case from earlier. Except a lot more expensive.

April 15th, 2017 Onwards

If you buy 3 boxes of “Code of the Duelist” from an official card store, you get the right to obtain a custom Storage case.

Purchasing the boxes get you a redeemable coupon.

You can get the Storage case from the store in question at a later time.

Storage case is while supplies last.

Source