After receiving a letter from his father, a thug named Dio decided to seize the Joestar family's fortune. But an unexpected accident made things go a little differently.
Jonathan was already very fond of Dio from the start, while Dio acquired a System that could take him between worlds. He could only leave each world and return to where he came from after becoming its ruler.
Jonathan: Dio is my best friend. He's more dependable than I am, so I'm willing to give him all my property.
Erina: Ah, he's annoying, but I don't exactly dislike him.
The little runt who performed human transmutation: He might be the greatest State Alchemist in history, but I'll surpass him one day.
The Hero Association: Could Blast's true identity possibly be...?
Dio's response: I only wanted to steal the Joestar family's fortune at first. How did I somehow end up having to rule the whole world? Stay away from me. I, Dio, just want to live a peaceful life!
Well, can't be helped.
Then let me rule over all of you!