The older I get, the more I appreciate stories that have something different either in plot or execution. Toumei na Ai no Utsuwa isn't a complex story, it's not action-filled, it's not really big on emotional moments most of the time either—but there are random moments that occasionally pinged a "huh, I think this one's special" in my brain.
I appreciated how balanced Shiro is, as a creature who feeds on humans yet doesn't see them as food. Similarly, Miki is fed up with his life but doesn't hate people either. It's interesting to see them simply...existing and experiencing life together, and of note are the smooth switches between their perspectives. Most of all, I appreciate how this story is allowed to breathe: it doesn't feel like you're rushed from one plot point to another, but, at the same time, the story is moved forward each chapter.
The art is gorgeous, and I found myself going back to many panels for a few seconds to simply take in all the detail and delicateness of the lines and shading.
Have I made this sound better than it actually is? Probably. But, to me, it's perfect just like this. Maybe for you it will be as well.