Cute, but I also can't get over how it doesn't quite make sense for a dragon to remain hidden in the middle of a town, where only the MC, who happens to like dragons, sees her.
It would make more sense setting-wise, to have a middle-aged MC who works on a mountain or something, happen by the dragon, and then they slowly start to mingle. The story can go from there, to explore their relationship together, and each other individually as people. At some point they can even go down town, and explore that avenue...
At the moment, however, the story feels like it is a bit too limited by the fact that "A god damn huge dragon has to hide in the middle of a town, and due to too many coincidences, only the MC is aware of her existence."
It also doesn't help that the MC is a poor student, so it gives off a lot of self-projection vibes.
It'd have been good to just make away with these issues to begin with, but whatever. It's still cute, but could've been better..