Here's the scenario: the story is already nearing its end, about 2/3 through or so, and because of how the plot unfolds, it's necessary to introduce a new POV character, partly to provide the readers with a pair of eyes into scenes that are essential to the plot / story, but they would otherwise miss entirely. Note that the character does not exist just for the sake of providing her eyes for those scenes, but she's also an integral part of the story, playing a part in how the main plot unfolds in the end. It's just that she comes late into the story, but it feels problematic to introduce a new POV this late in the game, and introducing her earlier is also out of the question as she's not a main character and it would've interrupted the cohesion/flow of the two main plots. In her first POV chapter, she meets another important character, but who is not a POV character, yet an important player in the MCs' lives. These two characters (the new POV character and the important side character) have known each other for over ten years and share a lot of history, their relationship is very twisted and strange, so there's a huge amount of undercurrents going on in their interaction. Now, it's probably a bad idea to make the characters behave like they're purposefully trying to introduce the reader to their history (suddenly repeating conversations they've had several times years and years ago), to bring them up to speed, but it also feels wrong to just drop the reader into the scene without any background info on why the characters behave in a certain way towards one another, why there's a lot of tension between them etc. The scene is not about their backstory. It's essential for the story, their (and everyone else's) future, not their past. Since it'd be unnatural for the characters to "reveal" things they already know or perhaps even think about things they've thought over a thousand times, can that vagueness still work? Pique the reader's interest? Or perhaps be confusing/annoying? One option is to have a main character find out about these things as she's already interested in the new POV character if that'd help at easing the reader into the new POV. What things would you take into consideration if you were writing it? Thanks in advance!