After transmigrating into a world ruled by beast tamers, a young man awakens only mediocre talent and is looked down upon by everyone. However, he secretly possesses the ability to analyze the hidden potential of demonic beasts. Starting with an ordinary spirit fox, he gradually nurtures it into a powerful SSS-Rank Beast-Eared Girl while uncovering ancient secrets, protecting his companions, and rising to the top of the beast-taming world.