On top of tha♋t, this isn't really a genre that needs massive♏ story-building unless there's a campaign or PvE story of some kind.

Whatever the characters are doing in the vignettes are completely irrelevant, because in the game itself, we have characters who are supposed to be friends blowing eachother's brains out and characters who are supposed to be enemies saving eachothers' lives. It just doesn't work. There is nothing in the game💃 that reflected the vignettes' plotline.