Hey, Did You See My Elf?

In this world, humans and elves were born together on this blue planet. How many immortal myths have been born in these endless years. So what kind of existence are the four mythical beasts in mythology? How did humans discover the twenty-four solar terms? And where did those festivals come from? Does the immortal even really exist? A novel for pet lovers, a pet development stream written based on the settings of Pokemon and pet mini-games.