All the Gods Are My Secret Identities

On an ordinary morning, someone handed me a seed that was supposedly from a "mythical tree." To save humanity from the impending disaster, I have to grow it. So, full of excitement (not really), I started putting on a show for the whole world. One ordinary day, everyone living on Blue Star saw the sun seeking refuge. More than wondering whether the gods really existed or which pantheon the sun god belonged to, humanity wanted to know why the sun had come to Blue Star to take shelter?!! Where was Hou Yi?! Where was the Heavenly Dog?! Even Luo Hou would do! Help!!!!!! . . . . The title and blurb are tentative. I'll write it sooner or later anyway. Theme: The earliest human culture was mythology