Kobo Daishi, also known as Saba Daishi in certain regional traditions, refers to Kukai (774–835 CE), the founder of the Shingon school of Japanese Buddhism. He is venerated as a scholar, pilgrim, and religious teacher, with numerous temples and legends across Japan, particularly along the Shikoku pilgrimage route, attributing healing and protective virtues to his intercession. While popular devotion associates him with health and well-being, these attributions arise from folk tradition and pilgrimage practice rather than formal doctrinal claims.