The item- The one That Might Save Us All

Two kingdoms are at war. Vesta-The light kingdom. The Defenders, and Xalaven. The-dark kingdom. The fighters. Suzu. Citizen of the light kingdom Vesta. Leader of the army. Samurai. Both kingdoms are fighting for the sacred weapon to kill the opposing kingdoms leader. Who ever wins gets full control of the enemy kingdom. Vesta must protect their Queen, and Xalaven must protect their King. Who will die first?