Koharu is a Japanese given name composed of the characters for 'light' (ko) and 'spring' (haru), meaning "light of spring". It has been associated with renewal, beauty, and hope since ancient times, and was often chosen by parents in feudal Japan to bring good fortune. Notable figures like Oharu have borne this name throughout history. Today, it remains popular for its lovely sound and positive associations, embodying traditional Japanese culture while offering uniqueness and meaning.