I Have a Back Garden with Mythical Beasts

This is still the world of humans, but it is completely different from what it used to be! More than 250 years ago, spiritual energy revived around the world. Under the nourishment of spiritual energy, animals and plants began to evolve into strange beasts. They relied on their mutated ability to swallow rocks and spit fire, and their extraordinary ability to fly into the sky and escape from the earth to form a tide of beasts that continuously captured human towns. In order to survive, human evolution has awakened companion guardian beasts to kill monsters with monsters! Children who have just been born will have spiritual marks on their bodies, and the spiritual marks breed spiritual seeds. When they are fifteen years old, they undergo an awakening ceremony, and the awakening is successful. The spiritual seeds hatch out companion beasts, and they become "demon hunters" from then on. They live in the inner city and the central city and become superiors. If they fail, they become a pariah in the outer city who can be trampled on by others. Li Zimu in the outer city was tricked by Sun Tianhu, the only son of the director of the Security Department, on the day of the awakening ceremony, and his awakening failed. Just when he was cornered by Sun Tianhu, Li Zimu kindly helped an old woman and accidentally obtained a key. He used this key to open a sealed door of an ancient enchantment. "Welcome to the 60th owner of the 'Hundred Beasts Garden'! From now on, all the sacred beasts and sacred beasts sealed in the zoo have become your companion guardian beasts."