JOJO: I, Jotaro Kujo, come to the modern age

Story of: JOJO: I, Jotaro Kujo, come to the modern age

Suppose that after defeating the Egyptian Dio, Jotaro Kujo was flying back to Japan with Joseph, and the "Vehicle Killer" activated its ability again, causing the plane to crash into the sea, and Jotaro Kujo came to the world because of this. In modern society, what kind of wonderful stories will happen here?(There will be many people from the original anime traveling through time)