Thirty days before his class's sudden transport to a fantasy world, Kazuma, armed with his "Life Simulator" system, foresaw the impending upheaval. While his classmates idly awaited their fate, Kazuma relentlessly prepared. He didn't just passively simulate lives; he meticulously analyzed each scenario, optimizing every decision to maximize his gains. He focused on combat prowess, arcane knowledge, and strategic thinking, pushing his simulated selves to their absolute limits. He meticulously accumulated skills, knowledge, and attribute enhancements, transforming his initially average self into a well-rounded combatant and strategist. He understood that in a world where power reigned supreme, preparation was paramount. He fortified his mind and body through countless simulated trials, ensuring that when the summoning occurred, he wouldn't be caught unprepared. He was determined to emerge not as a "useless hero," but as a force to be reckoned with.