Buddhism is a spiritual and philosophical tradition founded in the 5th century BCE by Siddhartha Gautama, known as the Buddha. It emphasizes the path to enlightenment through practices such as meditation, ethical living, and mindfulness, shaping the cultural and religious landscape of Japan during the Yamato state and Kofun period. This era saw the initial introduction and integration of Buddhist ideas into Japanese society, influencing art, politics, and social structures.