In Japan, if you purchase an item from a store, you generally cannot return it for your own reasons, like "it was cheaper at another store" or "it was not what I had imagined." If the product is defective, or if there is an issue with the sales agreement, such as an incorrect explanation at the time of sale, the product can be returned. For this reason, it is important to thoroughly check the quality and price of the product before purchasing it, and to inquire with a store employee if you have any questions or concerns.
However, some stores, depending on their own rules, may accept returns under certain conditions. Check with the store before making a purchase. If they do accept returns, you will still need a receipt. Be sure to carefully keep receipts for items purchased during your trip, and try to maintain the items in as clean a condition as possible from the time you bought them.
