Failing to go through with suicide because he refuses to die a virgin, Kael instead receives an offer from a beautiful woman to sleep together before ending their lives. However, that very moment awakens a system, granting him a rare rank-seven job. To level up and survive in the apocalyptic world, Kael must fulfill the system's unique and vulgar conditions. From a total loser, Kael's journey to dominate the new world alongside his harem begins!