[About the first purchase] In the case of products that have initial purchase conditions described in "Other items / remarks", we will confirm that the conditions are met when you place your order. [About returns] We make every effort to ensure the safety of the product, but in the unlikely event that we deliver a defective product, we will accept exchanges and returns, so please contact us within 5 days from the date of delivery. We will replace it free of charge. However, please note that we cannot accept exchanges or returns due to customer's convenience after shipment.