I'm honestly a bit torn on this one, because sometimes writers seem to repeat the same two or three conflicts over and over. It's like the default is always the 'human vs. supernatural' culture clash or Casey's family finding out, which are fine starting points but get predictable. The more interesting fics I've read dig into the aftermath of Casey being pulled from his old life into this hidden world he didn't ask for. His identity was tied to being a normal guy, and now he's linked to a centuries-old warrior-angel. The challenge isn't just about secrets; it's about Casey feeling like he's lost his own story and has to figure out who he is in this new, terrifying context, while Raphael tries to grasp why that's such a big deal for a human.
And then there's the physicality of it all. Raphael operates on a scale Casey can barely comprehend, fighting cosmic-level threats. Casey's bravery is undeniable, but he's fundamentally fragile. A lot of fics gloss over the sheer, constant danger and the PTSD that would come with it. The real tension for me is in the quiet moments after a battle—Raphael having to learn a human level of gentleness, and Casey wrestling with feeling like a liability. That imbalance of power is a huge, messy challenge to write well, and it's why the best stories in this pairing feel earned, not just tropey.