Lu Chen is the protagonist, a high school student who publicly awakens an F‑R Rank talent but secretly has an S‑Rank talent “Gluttony.” He lives in extreme poverty, supports his younger sister, and is burdened by his parents’ debt. He contracts a dying stray dog and uses his talent to forcibly evolve it into a monstrous Bio‑Demon Dog. He is cold, calculating, and ruthless when provoked. He enters the underground beast arena to earn money for evolution materials, showing no fear of powerful enemies or shady figures.
