Sword of the Thunder God

The Sword of The Thunder Spirit was owned by Second Hokage. It was stolen from the leaf village by Idate Morino because Aoi Rokusho told him that he could become a chunin if he manages to get the sword. Rokusho then took the sword for himself until Naruto Uzumaki damaged it using the Rasengan. Just like the first hokage's necklace, which now hangs around Naruto's neck, this sword too is very valuable, as it belonged to the Nidaime.