After dying in an unforeseen accident, Kim Yohan is reincarnated as Johan Aitz of the Aitz family. Although born a noble, Johan Aitz ranks dead last within his own household. To make matters worse, this world is a brutal medieval realm. “The only one you can trust is yourself.” To survive in this law-of-the-jungle world, money and strength are essential! To survive in this law-of-the-jungle world, money and strength are essential! While accumulating training time based on the knowledge from his former modern life, Johan encounters Kaegal, the Master of Deadly Poison from the Empire’s greatest assassin group, the Nesos Guild... This is the story of Johan’s desperate struggle to avoid becoming prey in this era.