Double Swords: Twice the Adventure
While in search for the missing El and his sister, Elsword takes on the quest to become the best swordsman in all of Elrios. As he builds his skill, he realizes that knowing how to handle a sword in the conventional way is barely enough.

During his adventures, Elsword chances upon a hidden treasure of Elrios known as Conwell, a mystical scabbard that enables him to summon a second sword at will. He makes a pact with it and begins to develop his own dual wielded sword-fighting style. The new style gives him improved speed and greater ability to defeat enemies.

Word spread of this swordsman carrying the magical scabbard Conwell. Soon, Elsword is known throughout Elrios by a new nickname - Sheath Knight.