Rushana Butsu (Rushana Buddha) refers to Vairocana Buddha in Japanese Buddhist tradition, often depicted as the cosmic Buddha embodying the essential nature of all phenomena and representing the Dharma-body from which all other Buddhas emanate. Rushana is venerated in Kegon and esoteric Buddhist schools as a central figure symbolizing enlightenment and the illuminating truth pervading the universe, most famously represented by the Great Buddha statue at Todai-ji in Nara. Devotees have long regarded this figure as a source of spiritual protection and guidance, though such associations reflect religious tradition and devotional practice rather than verifiable historical claims.