resolve a disagreement- Anything from the scale of an argument to an all-out war. Will you choose the diplomatic route, or wholly reject one side in favor of the other?
a natural disaster- The whole world has been upheaved by a terrifying force. The landscape is different now, things aren't where or how they used to be, and there are unexpected dangers lurking around every other corner. Please be cautious and stay safe out there!
one of you is from a different genre- One of you done got isekai'd or something, because this story is DEFINITELY not where you belong! What gives?! Oh well, you're in this situation now, so I guess you'd better deal with it!