We'll probably be like an egg hitting a hard surface.
It will probably go something like this.
SH: For the rebellion!

RR: So cute~!

Where did you come from?

(grabs SH by the neck) Call me, big sis~! And I will call you little sis!
SH: I refuse! I have the high ground, RR!

RR: Wow, adorable and cute! Wait... Why is there a bulge in your pants?
SH: I am going to challenge you to a story duel!

AND I WILL PICK THE GENRE!
RR: Wait, wait... don't grab me there...
SH: We're gonna be protagonists and it's gonna be smu-
Some SH author is taking notes from the corner: In the end, the ultimate question is who won?

The answer? Everyone.