This article explores the meaning and use of names in Japanese culture. It is important to understand when it is appropriate to use someone's first name, as using it without an honorific suffix can be seen as disrespectful or impolite. Using a person's first name should generally be reserved for close friends or family members, while colleagues at work should be addressed by their last name with an appropriate honorific suffix such as -san. Understanding the significance of addressing someone by their first name in Japan will help foster mutual respect among all parties involved.