The world had long known about the portal machines, powerful devices capable of tearing open gateways to unknown realms. But they were far too dangerous, unpredictable, unstable. No one dared use them—until the meteorite came.
Its explosion sent a wave of energy across the planet, awakening abilities in certain individuals. Fire, water, earth—elements now bent to human will. Suddenly, the portals weren’t just dangerous—they were opportunities.
Guilds rose to power, controlling the machines, sending adventurers into the portals to retrieve crystal cores from creatures that had existed beyond human reach. These cores, ranked from F to SSS, became the key to strength, wealth, and influence.
Leon was just a D-rank adventurer, skilled but unremarkable, always choosing solo missions over working in teams. He kept his distance from guild politics—until the master of Titan’s Fang took his own life, leaving the guild without a leader. Against all odds, Leon was chosen to inherit the position.
But power breeds resentment. Just as he was about to take full control, his own guild turned on him. He never saw the final blow coming.
Then, he woke up. Sixteen again. Before the betrayal. Before the leadership. Before the mistakes.
This time, things would be different.
And this time, he had a system—one that would make him stronger, faster, and ready to claim what was stolen from him.