Rules listed on the retail website must be followed concerning returning an item purchased online if it is not damaged or defective, or if you want to return the item for your own reasons (you don’t need it anymore or you don’t like it, for example), not because the incorrect item was sent. So, please check the return policy on the website. If there is no written policy and you return the item within eight days of receiving it, the contract can be withdrawn or canceled and the product returned, with you, the consumer, paying the shipping cost. Japan does not have a cooling-off system for mail-order sales that allows for the unconditional cancellation of a purchase contract.