I will start off by saying that saying that first and foremost this story was an extremely heartfelt one. It invokes just about every emotion throughout its scenes and storytelling: happiness, laughter, grief, bottomless sorrow. It sets up the characters well and really gets you invested in their relationship with one another. I was rooting for the happiness and success of Hazuki and Naoe throughout every word.
I really can't think of too many things to nitpick about, but the main is that sometimes the mental interjections were hard to read without the spaces and I often had to slow down/reread them (although I'm pretty sure the chaotic and rushed tone they provided was an intended one.) Overall though, the polish of the piece was good.
To sum it all up? This was a beautiful story.