The person who marries into a is the audience's surrogate. They see the dysfunction clearly because they weren't raised in it. Their attempt to "save" their partner from the family usually backfires, turning them into the villain in the family’s narrative. Think Skyler White in Breaking Bad or Lady Macduff.
Two siblings may remember the same upbringing in completely different ways—one as a warm childhood, the other as a period of neglect. relatives incest beautiful aunt mizuki yayoi