That was quite the trip.
I really don't understand who the guy on the ground is supposed to be (hope not Tamioka), wish that one thing was made clearer. If someone figures it out someday, please let me know.
I absolutely loved the story otherwise.
At this point Nazuna sucking off some random guy in the street for blood would feel too much like cheating on Kou.
I hope this doesn't lead to a NTR arc or some other trouble in their finally blooming relationship.
Damn. It wasn't the most original of stories but it had the potential to be really good. If only it established rules for his power, developed the various relationships or in general took its time with the story....
Still, it was enjoyable.