The Japanese girl name that means sunshine is Hikari, which has become a popular name for girls in Japan and other countries such as Korea and China. Japanese names have a rich history dating back to ancient times, and naming is considered an important decision influenced by traditional beliefs and superstitions. Pronunciation is also important in Japanese names as each syllable should be pronounced distinctly. In addition to Hikari, there are several other Japanese girl names that mean sunshine, including Haruhi and Teruko. Understanding the history and cultural significance behind these names can help parents make an informed decision when choosing a name for their child.