Not entirely loli-free, but none really play a role.
It's interesting, but not amazing or anything on the plot/character side of things. Some guy gets turned into this vampire-like thing that eats humans, but is reluctant to do so because he once was one and stuff. It's kind of like Shiki where there's a whole morality theme regarding humans eating meat, so should ghouls be allowed to eat humans or not.
Then it goes full-on action.
Are these like actually interesting philosophical questions/debates or is it the standard anime, hamfisted "I just took my first philosophy course and now I will talk/act like no rational adult person and take inflexible, childish positions whilst spouting a bunch of buzzwords" :/
How long is this manga BTW? Ongoing? I this like a OP (but senien of course) type of series or more like a Death Note (with a clear end goal within the next year/few years)?