Blue Rose Sword

The «Sword of Blue Rose» is a sword found in the mountain range at the edge. It was highly coveted by the knights in the Underworld. During the Alicization Arc, the sword was found by Eugeo, Kirito, and Alice Schuberg, but as it was extremely heavy, it was left in the cave. Four years later Eugeo returns to the cave and retrieves it and stores it with the Dragon Bone Axe. Six years later, Eugeo shows it to Kirito, and after they save Selka they use it to cut the Gigas Caesar.