In the year 2022, the unimaginable happend:The sky shattered, and massive doungouns appeared suspended in the heavens above Earth. Scientists scrambled to uncover their secretes, but every attempt to understand them ended in failure. As time passed, huminity began to grow accustomed to their ominous presence, choosing to ignore what they comprehend.

But just one year later, terror stuck. The doungouns broke open, unleashing an unrelenting tide of monsters upon earrh. Civilization teetered on the brink of extinction, and despair spread like wildfire. Yet, when all hope seemed lost, a phenomenon changed the course of history—a "profession system" awakened within humanity. Ordinary people gained extraordinary abilities, rising to combat the monstrous threat. Those who saved humanity came to be known as the "Heroes of Mankind."

Twenty years passed since that catastrophic event. In 2028, a new beacon of hope emerged: Kim Lan Tian Hao, a young man with a hidden class, the Thunder Swordsman. This profession, revered for its raw strength and agility, was unlike anything seen before. Humanity placed high expectations on him, and Kim fulfilled them in spectacular fashion. In just six years, he ascended to the rank of SS-class hunter, earning the admiration and trust of all.

However, peace was short-lived. The world trembled once again as the Second Catastrophe began. This time, the threat was greater, the stakes higher, and the consequences unimaginable. As chaos engulfed the planet, Kim Lan Tian Hao stood as humanity's last hope, his every step shaping the fate of the world.But fate was cruel to humanity. The once undefeated Kim Lan Tian Hao found himself powerless against the new wave of monsters. These creatures possessed an extraordinary resistance to lightning, rendering his Thunder Swordsman abilities almost useless. In the heat of battle, Lan Tian watched helplessly as his friends, family, and countless innocents perished before his eyes.

Regret and despair consumed him. He blamed himself for being too weak, for not preparing for the unknown. If only I could go back in time... he thought bitterly. He laughed at the absurdity of the idea, mocking himself for even entertaining such a notion. What a joke! How pathetic to blame my luck when it's my own weakness that brought us here.

As these thoughts clouded his mind, the boss monster—a towering beast of unparalleled strength—appeared. With a single devastating slash, it ended Lan Tian's life, and with it, humanity's final hope faded into oblivion.

Beep. Beep. Beep.

The sound of an alarm clock shattered the silence. A hand reached out to silence it. Lan Tian jolted awake, confused and disoriented. His surroundings were eerily familiar, yet different. He glanced at the date on his phone: January 2027.

Lan Tian froze, his heart pounding in disbelief. He was back in the past, younger and alive. A storm of emotions swept over him—confusion, relief, and hope. Am I in heaven? he wondered, looking around in amazement. But as the minutes passed, reality began to sink in. This wasn't heaven. This was Earth—his second chance.

Overwhelmed with joy and determination, Lan Tian opened his system window. To his astonishment, his Profession slot was unselected. He stared at it for a moment, and then a grin spread across his face.

"Humanity's last hope hasn't ended yet," he said, his voice brimming with newfound resolve. "This time, I'll change everything.

Lan Tian Hao stood before the F-rank dungeon gate, a faint smirk of anticipation on his face. He knew time was precious, and he had no intention of wasting it. His first goal was clear: grind experience, level up to 15, and select the right profession to prepare for the battles ahead.

As he approached the registration desk, ready to sign up, a middle-aged man with a stern expression blocked his path. "Hey, kid!" the man snapped, his voice filled with irritation. "What are you doing here? Dungeons aren't a playground for children. Go back home, play some video games, or hang out at the park! This isn't a joke!"

Lan Tian froze momentarily, observing the man with calm eyes. Inside, a flicker of amusement crossed his mind. This foolish man... doesn't he realize who I am? I, the once greatest hunter in humanity's history, am being lectured about entering an F-rank dungeon. But he quickly shook off the thought. He knew this man wasn't bad. He was just worried—after all, Lan Tian looked like nothing more than a high school student now.

Lan Tian Hao's smile wavered as a flood of memories from his past life surfaced. He didn't just become a hunter out of choice; it was a necessity. His mother had passed away giving birth to him, and by the time he turned 13, his father died in a tragic car accident. Left with no one but his aging grandfather—the only family he had left—Lan Tian discovered the man who raised him was battling cancer.

The cost of treatment was staggering, and the weight of responsibility fell entirely on his young shoulders. Without money or resources, he had no other path but to become a hunter. Fighting in dungeons and risking his life daily was the only way he could provide for his grandfather's medical care.

Without responding to the man, Lan Tian sidestepped him and completed his registration. Ignoring the concerned murmurs of bystanders, he approached the dungeon gate. As the shimmering surface of the portal reflected his face, he paused, a faint smile of joy appearing on his lips.

In his mind, he thought, This is where it begins. This time, I will change the fate of humanity. I am the last hope of this world. I am Kim Lan Tian Hao... and I am back.

With those words echoing in his heart, he stepped into the dungeon gate, ready to begin his journey toward rewriting destiny