Undefeated Ranker

On the Day of Judgment, monsters from other dimensions invaded earth. Thirty-two years later, humans with special abilities called hunters fight the monsters to keep humanity safe. They train in an online game called "Lost City"-but the best player, Jinsoo Kwon a.k.a. "Unknown," is no hunter. He only plays the game to earn money for his sister's medical bills. But when a guild recruits Jinsoo to be a hunter in return for medicine, it's an offer he can't refuse. It's time for this fighting legend to protect his home and his family!