I've read a ton of Hajime/Yue fics over the years, and honestly, a lot of writers fall into the same trap: they treat Yue's intense devotion as a static state, not a dynamic source of tension. The real interesting stuff happens when they push against that. Yue's worship isn't just cute; it's borderline obsessive and canonically rooted in a near-lifelong isolation. Hajime accepting that without any internal conflict feels flat.
Some of the best plots I've seen lean into the uncomfortable side. Hajime isn't a normal guy; he's deeply traumatized and pragmatic to a fault. How does someone with that mindset process being someone's entire world? Does he ever worry he's exploiting her dependency, or that his own growing feelings are just a response to being so unconditionally validated? I read one story that had him trying to 'set her free' by pushing her away, thinking it was for her own good, and the emotional fallout from Yue, who interprets his actions as a rejection of her very self, was brutal. That's the good stuff—when the tension isn't about 'will they or won't they,' but 'can this profoundly damaged, co-dependent relationship evolve into something healthy without losing its unique, fierce core.'
It's less about grand romantic gestures and more about the quiet, messed-up psychology. Does Hajime feel he deserves it? Does Yue ever have a moment of doubt, a flicker of fear that if he ever saw her as anything less than perfect, the spell would break? That's where the plot gold is, buried under all that mutual devotion.