What happened 10 years ago in Solo Leveling?

What happened 10 years ago in Solo Leveling is one of the most pivotal mysteries that shapes the entire narrative of this beloved manhwa series.

The Great Cataclysm: Gates and Dungeons Appear

Ten years before the main story begins, a catastrophic event known as "The Great Cataclysm" occurred worldwide. This supernatural phenomenon introduced dimensional rifts called "Gates" that connected Earth to dangerous dungeon realms filled with magical beasts and monsters. The appearance of these Gates fundamentally altered human civilization and marked the beginning of the Hunter era.

The Awakening of Hunters

Simultaneously with the Gates' emergence, certain humans began "awakening" supernatural abilities, becoming known as Hunters. These individuals gained various magical powers and enhanced physical capabilities, making them capable of entering dungeons to combat the monsters within. The awakening process seemed random, affecting people regardless of age, background, or physical condition.

The Establishment of Hunter Society

Following this world-changing event, governments worldwide restructured to accommodate this new reality. Hunter guilds formed, ranking systems were established (from E-rank to S-rank), and entire economies shifted around dungeon raiding and magical beast materials. The Korean Hunter Association, where much of Solo Leveling takes place, became one of these regulatory bodies.

Impact on Sung Jin-Woo's World

This decade-old catastrophe directly influenced protagonist Sung Jin-Woo's life. Born into this post-Gate world, he awakened as the weakest possible Hunter—an E-rank—earning him the nickname "World's Weakest Hunter." His struggles in this harsh new reality set the stage for his incredible transformation through the mysterious System.

The events from ten years ago continue to influence every aspect of the Solo Leveling universe, from political structures to personal relationships. Understanding this foundational catastrophe provides crucial context for appreciating the series' complex world-building and character development.