The ancient ties between Japan, the "land of the rising sun," and the Indian sub-continent can be traced back to at least the 6th century CE when Buddhism spread from India to Japan through China and Korea.

During the 8th century CE, the Japanese monk Kukai, also known as Kobo Daishi, traveled to China to study Buddhism and brought back with him a number of Sanskrit texts, which he used to establish the Shingon school of Buddhism in Japan.

Throughout the centuries, Japan and India continued to have cultural and trade relations. The 16th century saw the arrival of the Portuguese and the establishment of a trade route between Goa and Japan, which helped to further strengthen these ties. Japan also imported Indian textiles, spices, and other goods.

In the modern era, India and Japan have continued to maintain close relations, with both countries being part of the Quadrilateral Security Dialogue or "Quad" along with the United States and Australia. in the region.

Cultural exchanges have also continued, with Indian philosophy and spirituality, including yoga and meditation, gaining popularity in Japan. In return, Japanese culture, including martial arts, anime, and manga, has become increasingly popular in India.

Overall, the ancient ties between Japan and the Indian sub-continent have been marked by a mutual fascination and respect for each other's cultures, which continues to this day.