Incredibly tasteful. I feel like even if you are one of those 'shippers' who are, say, into NicoMaki, it would be hard not to get drawn into the wonderful atmosphere of this doujin.
The artstyle is so wonderful and spot on, and they look so cute with both their side ponytails. I always love seeing what people imagine them doing in the future, and these kinds of 'timeskips' in these works. I agree with thecriticofinnocence, I definitely hope the artist releases a sequel sometime in the future. It'd be great to read more!
@thecriticofinnocence, aleden There IS a sequel, although (un)fortunately it's mostly smut and doesn't have the same kind of atmosphere like this one. Just search the artist. There's also a prequel with almost the same atmosphere as this one, but well, it's a prequel.