Too many unknown variables yet, but it was very enjoyable, indeed.

My two minor gripes so far:
- The main character´s hair style is extremely ridiculous. But I´ve watched enough Bakuman to realize that it´s necessary, lol.
- Even more ridiculous is his attraction to zombies in a romantic matter. Though I found it kinda conflicting that someone who´s certainly knowledgable about zombies actually imagines a true love relationship with one. I mean ... zombies don´t think, don´t love, they only kill.

Other than that, lots of potential, but I won´t yet call this the highlight of the season. The zombie-stuff *could* become too fantasy-heavy. On the contrary, it could become too typical a romance anime, with the main character having already two girls on his hook (Rea and, well. They quickly established a potential incest-subplot, lol).
If I could choose this series´ progression, I´d like see Furuya´s school life, including his two friends, being fleshed out, then gradually introducing those around him to his zombie-stuff. But I have no idea how delicate or not the producers are going to handle the zombie-theme here.

Anyway, worth watching, definitely.