Belderiver is a type of weapon in Odin Sphere.
Weapon Summary[]
Belderiver is a red psypher tipped dagger, one of the five hero psypher weapons in the game and it is the most powerful of all among it, infamous for it's extremely overpowered damaging quality, dark powers and terrifying capabilities due to the curse it carries within, this is the weapon that Oswald wields in the game. As of Leifthrasir the sword gives the user control of Dark Elemental Magic.
Background Story[]
The Belderiver was created and forged by Brom at Melvin's request as a new standard service weapon for the Ringford Army wishing to mass produce it. When the weapon was forged he made a deal with Odette to give the weapon dark powers and manifest through the wielder. He would give the sword to soldiers he would dub Shadow Knights and while it proved powerful it would overpower the wielders turning them into phantoms that would dwell on Horn Mountain as Desecrators.
Over time Brom would come to regret forging the sword, especially with the mounting number of victims falling to the swords dark powers. Melvin would, on the side, train a young human in the way of combat, his adoptive son Oswald and impressed by his skill he would eventually decide to make Oswald the new wielder.
Eventually making a new contract with Odette promising Oswald's soul in exchange for power for the weapon. When Oswald was old enough he would be given both the rank of Shadow Knight and the Belderiver. Out of all the users Oswald not only proved to be the strongest but also the one least likely to succumb to the Swords Curse. He would eventually give Oswald a task, climb Horn Mountain and kill Hindel the future seeing Dragon.
Oswald eager to please his adoptive father would carry out the task. He would eventually complete the task with ease killing Hindel and proving the swords immense power that could even fell the dragons.
Dark Rumors[]
Rumors would spread of the Sword of it's power to kill dragons, and ward off curses as well as rumors stating that it would only grant power at the cost of the wielders soul. Brom would come to heavily regret making the Belderiver and wanting to right a wrong he would seek out Oswald to tell him the truth of the weapon's power. However Melvin would have him sent to the Nether realm and would assure Oswald that Brom had lost his nerve and feared the sword. Oswald would go along with this until during a battle he would be approached by a dreaded Halja demanding Oswald that he would honor the contract made for his swords power. Though Oswald would say he knew nothing of the contract he would nonetheless be filled with doubt even after driving the Halja away.
oswald talked to his melvin what was the reason of halja's appear to him and what they we're seeking from him for, melvin insisted that they are just "natural phenomenon" in the battle as they are ghost of the dead former valentinians who still roam in the ruins of their kingdom and that he can keep it at bay with his "powerful" weapon.
soon after melvin has gathered up 1/3 of the military's troops to his side for the intended revolution to be started in the kingdom to overthrow his first cousin mercedes however during the battle oswald was weakened due to the halja was preparing to collect his soul at the time and his soldiers we're sabotaged by turning them into frogs by ingway, the full truth came out when melvin was mortally injured and dying from the revolution he launched against his cousin to take the leadership crown from her, saying that the deal and dark rumors we're true that he did exchange his soul and life for the power of the weapon just to use him as one of the components to become king and also to tell oswald that he was totally nothing other than being a tool for him, soon afterwards melvin dies of his injuries then oswald was taken by halja into the netherworld.
oswald would later continue to use the weapon through out the next battle he has to go in even after melvin's death, until he fought king gallon during the armageddon that killed and stop him from marching into the world of living to devour life after his successful attack on the kingdom of titania.
Fate[]
after the defeat of five greatest disaster bosses that we're predicted to destroy the world, oswald quickly leaves the sinking and dying titania kingdom and rescue gwendolyn on time after she killed leventhan dragon and got her wings destroyed during the battle before she hits the ground, the two made it in the ruins of the kingdom of valentine, cornelius and velvet saw them passing out in the tiredness but velvet quickly think that the psypher could be turned into phozon to provide power for the still intact cauldron that she stopped before, velvet then took all of the four weapons they have and sacrificed it to be turn into phozons to provide power for the cauldron, oswald's weapon belderiver was among of the four weapons banished and sacrificed in the cauldron to make power, destroying belderiver weapon along with other 3 psypher weapon in the process and freeing oswald from it's curse.