Conquer the Game With the Best of the Best in Web Fiction

My father, who passed away leaving behind only a key, was a web novelist specializing in munchkin stories. Ten years later, the virtual reality game ‘The Another World,’ based on one of his works, became a platform of opportunity from basic livelihood to striking it rich and achieved unprecedented success. Kim U-Ju, the author's child, lived a grueling life without any special advantages. He accidentally discovered that a key-shaped merchandise item from his father's estate was being traded at a high price. Immediately, he used the key to open a limited edition book in his father's study and received a special gift within the game. U-Ju accepted the gift, and afterward, the Great Demon King Lucia, a character from his father's web novel, appeared. The Demon King Lucia granted U-Ju powers, but the overwhelming strength left him in an awkward position, unable to even complete simple daily quests. After much deliberation, U-Ju brought in another work, Killer Zero, to eliminate the source of the power, the Demon King. However, Jason, a limited edition power user from ‘The Other World’ who sensed something amiss, burst in, leading to a confrontation. Can U-Ju, armed with the strongest web novel characters, truly stand against the mightiest in the game? (Source: KakaoPage, translated)