The Kusanagi-no-Tsurugi, also known as the Kusanagi Sword, is a legendary weapon from Japanese mythology. However, the actual existence of the physical sword in real life is a subject of debate and speculation.

The Kusanagi Sword is considered one of the three sacred treasures of Japan, along with the mirror Yata no Kagami and the jewel Yasakani no Magatama. These treasures are associated with the Japanese imperial family and are part of the country's mythological and historical narrative.

While no concrete evidence of the physical existence of the Kusanagi Sword has been found, it is worth noting that many legendary swords and artifacts from various cultures are rooted in mythology and folklore. These artifacts often serve as symbolic or cultural representations rather than being actual historical relics.

Given the legendary and mythical nature of the Kusanagi Sword, it is generally regarded as a symbol rather than a tangible object. It holds significant cultural and historical importance in Japan and continues to be referenced in various forms of media and artistic interpretations.