[JoJo's Bizarre Adventure] Ancestor, You’re Forever the Best

This is the story of the Brando family's ancestor in ancient times... Aure was a man whose intelligence far surpassed that of the primitive people of his era, and even that of any human who would appear ten thousand years later. He was a gray whale singing at fifteen hertz, the loneliest planet in the galaxy. Possessing a wisdom that belonged to no era, he journeyed alone in search of the world's end. Aure had intended to burn through his limited life in pursuit of the truth, but one day he met Kars, a member of the Dark Ones, who changed his life forever. With Kars's help, he became a different kind of Ultimate Lifeform. But their differences in philosophy eventually drove them apart. In the end, Aure fell into a deep sleep. Before doing so, he created descendants who carried his genes, and mischievously devised a way for them to awaken him. And so tens of thousands of years passed... A boy named Dio Brando awakened his ancestor through a one-in-ten-million coincidence. "Oh, hello there! You must be my great-great-great-great... grandson, I suppose. Anyway, I'm bored with nothing to do right now. Is there anything you'd like me to help you with?" The utterly bewildered Dio Brando had successfully acquired an all-purpose grandpa who would always be by his side. A cause for celebration, indeed. [Before You Read] 1. Dio's ancestor story. It was only a matter of time before I went this far. 2. The ancestor has an absurdly high IQ and is a bug-level character, the ultimate cheat-code grandpa for a wish-fulfillment story. 3. Short story, pairing undecided, spanning the timelines of several series. 4. More to be added if I think of anything. Theme: Even in old age, the sunset-red generation can still thrive