So, this is great. I can't get enough of it. However, compared to most other romances here, it's so utterly jarring. In a good way, of course, but still.
Most romances try to draw the crowd through a simple question: "Will they or won't they?" This leads to some super frustrating situations where the reader is left screaming "Just have babies already!" at the screen, while the characters basically faff about.
All of this goes double for anything involving anything close to loli or shota. Of course, in real life, a child's crush on an older person has basically zero chance of being reciprocated, so this is realistic if nothing else. But some works portray the feelings as basically mutual, and still keep faffing about because a) it keeps people reading and b) that way it won't offend anyone.
But this manga does exactly none of that. The two characters are mutually in love from the beginning. Quite possibly, they are in a romantic relationship from the beginning too. They keep expressing affection every which way, whether physically or verbally or anything else. And, since Nei is hinted at having succubus blood, if they haven't consummated their relationship already they probably will soon. And they look so happy!
I just feel so happy for them, y'know?