Adam Tideborne and the Greatsword of War

Adam Tideborne grew up on a polluted Earth shattered by the Endless War, but now he's seventeen nobody can stop him from going through the holy portal into Elysium. A colourful unexplored world where animals both long extinct on Earth and once thought to only be in stories, thrive.

Where Adam can learn magic, where he can train to become a hero, like his parents, whose stories of bravery are known even on Earth. Except, when Adam makes it to Elysium he is devastated to find that his parents are long dead, monsters have power over most of the world, and a greatsword is missing.

A greatsword thought to be owned by the Horseman of War. A weapon powerful enough to destroy Elysium.