Kongō-shū is a traditional Japanese school of thought that emphasizes the importance of the Kongō or "diamond" principle, which symbolizes strength and resilience. This philosophy is often associated with the teachings of Buddhism, particularly the Vajrayāna or Tantric Buddhism, where the diamond represents the indestructible nature of enlightenment. The Kongō-shū also focuses on the practice of meditation and rituals to achieve spiritual growth. It encourages followers to cultivate inner strength and clarity, allowing them to navigate life's challenges with a steadfast mind. This school of thought has influenced various aspects of Japanese culture, including art and literature.