The Female Lead Saves the World

'''I was reincarnated as Citizen 1 in *Prevent the World's End*, a novel I devoured. Not only that, but I awakened as an A-rank healer and won the 25 billion mega lotto?! But it's all pointless. Because the world of the novel I've been reincarnated into is about to end. “Do you think I'll give up 25 billion that easily?!” I'll stop this apocalypse by any means necessary. I will save this world with my money, abilities, and knowledge! However, the original male lead and his guild, who are supposed to help me, are completely rock bottom. I have to revive the guild, which has no money and the worst reputation. “I'm here to buy the Justice Guild.” It may start as a punching bag, but t...