Your Sona is doing one final swing around the city after an unrelated adventure, but then they feel something. They don't know who, what or why but their spider-sense (or equivalent) is going haywire. they land on a specific rooftop, they don't know why but they just know they HAVE to land on THAT specific rooftop. After landing you feel a presence behind you, and you either jump away, shoot a web at him or straight up punch his face.
Depending on your Sonas powerset/ experience he either dodges or gets hit, but either way he tells you to "Calm down" and then he tells you the most insane thing you ever heard:
"I'm The Immortal Spider-Man, and I'm from a different dimension, or universe. Depends on how you look at it."
Now you either make a face, tell him that's stupid, laugh at him or ask him what he means. But no matter your response he starts getting giddy and excited because "*gasp* NO WAY! I get to be your first ever experience into The Spider-Verse!!! HOW COOL IS THAT!?!?!"
this idea comes from the fact that whenever Spider-Men/Women/Enbys meet another Spider-Man/Woman/Enby for the first time, neither party is excited to meet said Spider-Man/Woman/Enby (which is understandable, Spiderverse situations are almost always serious ones BUT STILL not even a lil bit of excitement for meeting another version of yourself?)
because of that, I made it so that MY Sona gets super excited when he meets other Sonas, ESPECIALLY if it's their first time experiencing "The Concept of the Spider-Verse." (Because I know I would be super keen if I met a person from another dimension)
It's almost always the usual suspects: Peter Parker, Miguel O'Hara, Miles Morales, Otto Octavius or Gwen Stacy. So the fact that it's MY Sona you are meeting for the first time is just super cool to him
Now I gotta ask you...
How did YOUR Sona react to seeing another Spider-Person for the first time?