Ame-no-Murakumo-no-Tsurugi

Ame no Murakumo no Tsurugi, also known as Kusanagi no Tsurugi (Grass-Cutting Sword), Sword of the Gathering Clouds of Heaven or just Murakumo is one of the Three Imperial Regalia of Japan.

Summary
Murakumo is a unique holy sword that was found inside of the remains of the Legendary Evil Dragon, Yamata no Orochi after being slain by the Shinto God of the Storms, Susanoo no Mikoto. He later persented Murakumo to his older sister, Amaterasu, as a means of settling their differences,which she accepte

Appearance
Murakumo is a