Kingsley Sawyer was born and raised in SHIELD. After her parents death, she encounters a certain someone. The only reason she does is because it's the anniversary of her parents' death. The weight of it still weights heavy on her heart even after several years. The next couple years with Natasha pulls her heart strings and changes her life for the better. (I'm essentially going to go through the MCU from when Nat is brought to SHIELD till Endgame, so this is going to be a while. Also some people's character arc will be different from the movies.)