Beast Taming Evolution
Summary
Xi Guang Star Birds flying with spread wings between blue skies and white clouds, Swift Shadow Cloud Leopards hunting across vast grasslands, Acid-Erosive Giant Pythons lurking in mottled rainforests, and Cretaceous Dragons stirring up storms in the deep blue sea. Lin Yuan discovers he can make spiritual creatures evolve infinitely, continuously purifying their bloodlines Dust Butterfly → Steel Butterfly → Jade Emerald Butterfly → Tourmaline Imperial Butterfly This is a pure world of beast tamers
... and the second season of the Anime did a better job of pacing than I thought they would. I think they moved the Elf village arc from before hostilities with the Principality began to the inter-war period, aka the start of the second season, and used that to pad it out. Good call if that's what they did. In any event. Good season.