Beast Taming: My first spirit beast was a frog junior?

This is a world where everything can be imbued with sentience and become a spirit beast. Ancient ruins, fragments of the world, and astonishing legacies. The Azure Thunder Dragon, wielding wind and clouds and summoning thunderous roars; the Myriad Tree Vine King, dominating the continent; the Overturning Sea Rolling Whale, capable of manipulating clouds and rain yet erupting with the blazing heat of the sun; the Shattered Star Shark Moon Rabbit, seated high in the heavens; and the Ancient Rainbow Dragon, bringing miracles. Humans, through learning soul blood contracts, forge contracts with spirit beasts, employing various secret techniques to stand at the pinnacle of the world. My name is Xu Xian, I'm eighteen years old, and I'm a beast tamer.