I've always been fascinated by how fanfiction dives deeper into the emotional cracks 'Avengers: Age of Ultron' left untouched. The movie hinted at Natasha and Bruce's connection, but fanfics? They explode it into this raw, aching thing. Some writers focus on Natasha’s guilt—how she sees herself as a monster just like Bruce, but hers is buried under red in her ledger, not green in his skin. Others twist the lab scene into something softer, where Bruce doesn’t flee but stays, and they actually talk about the weight of being weapons.
Then there’s the trope of Natasha as the only one who can calm him, not just as a skill but because she’s the first person who looked at Hulk and didn’t flinch. The best fics don’t romanticize the trauma; they let it sit between them like a third person in the room. I read one where they’re in safehouse post-'Ultron', and Bruce keeps apologizing for leaving, and Natasha keeps saying she’d have run too—it’s this vicious cycle of understanding that hurts more than anger.