What a cute story. Since it was left pretty much open ended, I'll pretend it'll have a happy ending.
There's a lot of potential development here, but I suspect it won't be taken further. Also, the fangs are confusing. Are they supposed to be a metaphor? Does the author like fangs? I've seen the single fang trope a lot, but never as a part of the actual character, except in vampire or catgirl stories.
Also, LUGs ... ahhhh, my day is complete
The fang thing seems to be an actual trend Japan. I think it's called yaeba or something the like( don't remember exactly). It supposed to show youthfulness and cuteness.