Mufasa and Sarabi centric fics that deal with growth and conflict? That's a tall order because the source material gives them, what, maybe five minutes of screen time together? Most of the heavy lifting has to be done by the writer, and the ones that pull it off are special.
I found this one ages ago on Fanfiction.net called 'Where the Shadows Lie'. It's a prequel, starting from when they're basically cubs being groomed for their future roles. The emotional growth is slow and painful in a good way, because it's all about Sarabi learning to trust not just Mufasa, but the responsibility of being queen. She has this fierce independence that clashes with the expectations of the Pride Lands. The conflict isn't just external drama; it's her internal battle between loving him and resenting the cage that love sometimes feels like. Mufasa's growth is quieter, about tempering his natural confidence with the weight of the crown, realizing leadership isn't just about strength but about partnership.
Another one, more of a ‘what-if’ scenario, is 'The Weight of a Crown' on AO3. This one actually explores conflict after Simba's birth, which is a period most fics skip. It delves into the tension between Mufasa's duty as king and his duty as a father, and how Sarabi navigates protecting her son while supporting her mate. The emotional growth here is about their relationship maturing under immense pressure, the kind that either breaks you or forges something unshakeable. It's less about romantic sparks and more about the deep, worn-in love of a long-term partnership facing a shared, looming threat.
The key for me is finding stories where they argue, where they misunderstand each other, but you always see the foundation of respect underneath. Too many fics just make them a perfect, saintly power couple, which is boring. I want to see them earn that iconic sunrise scene.