Kusanagi-no-Tsurugi is believed to be a real sword, currently stored in the Atsuta Shrine, and is one of the divine Three Sacred Treasures of Japan alongside Yata-no-Kagami and Yasakani-no-Magatama.

Finding Shrine locations and completing the puzzles within them is a crucial part of Zelda: Tears of the Kingdom, because, if you ignore them, you won’t be able to increase your Hearts or Stamina.