Let's be real, the very premise of a Sasuke and Hinata kiss hinges on a particular type of creative ambition—the kind that looks at two characters who maybe exchanged two words in canon and thinks, 'what if their emotional repression resonated in a different key?' It's less about expecting it to feel true to 'Naruto' and more about using that extreme dissonance as a tool. The character development in those stories usually orbits around a forced vulnerability neither of them is equipped to handle.
In fics where it happens early, maybe during the Chunin Exams, it often serves as a catalyst to shatter Hinata's idolization. A clumsy, unexpected kiss from Sasuke, driven by some mix of curiosity and cold assessment, can jolt her out of viewing powerful peers as untouchable stars. She might channel the resulting confusion into a fiercer, more self-directed determination, her growth stemming from the deconstruction of a crush rather than its fulfillment. For Sasuke, it's typically a non-event emotionally, but it can become a data point in his warped analysis of human connections—a transaction, a test, or a momentary lapse.
The more interesting versions are the slow-burn, post-war explorations. Here, the kiss is a symptom, not the cause. Maybe they're both lonely, isolated figures navigating a peaceful world they feel alienated from. A kiss born from shared silence on a balcony somewhere could force them to articulate their isolation. Hinata, now a clan leader, might approach it with a pragmatic gravity, seeing in Sasuke another burdened soul, while his development could involve confronting a connection that offers nothing he traditionally sought—no power, no vengeance, just a quiet, complicated understanding. The development is in the awkward, fraught aftermath, not the moment itself.
I remember a specific fic where it happened after Neji's death, a moment of shared, wordless grief that was profoundly unromantic but created a bridge. Their subsequent interactions were painfully stilted, but it pushed Hinata to be more direct and Sasuke to acknowledge a debt to someone outside his usual circle. The kiss itself was almost an accident; the development was in learning how to navigate the new, uncomfortable space it opened between them.