I'm Invincible, but I've Transmigrated into a Game World

A player transmigrates into the world of a game. What kind of adventure awaits Kashul, once a top-tier player? Nations are at odds, while the gods watch in secret. Dungeons from the old game reappear, and the history of the ancient era begins to resurface. The battles between players at the top of the rankings have never ceased. A grand adventure is about to begin.