Leo Lynch travels to a world of beast taming. After awakening an ordinary talent, he unexpectedly gains the ability to analyze the potential of Demon Beasts. Starting with a Northern Red Fox that no one thought highly of, he raises powerful beast-eared partners step by step. He continuously grows through trials and assessments, gradually approaching the anomalies and truths hidden behind the world of Demon Beasts, all while protecting the important people around him.