Vampires now coexist with humans by forming contracts with human beings. Vampires who form these contracts become their pets, serving their every need. They are given pet collars, distinguishing them from wild vampires, which are still very dangerous.
Daichi really wants a pet vampire, but his older sister won't hear anything of it. One night, a wild vampire princess named Iko breaks into his house! Iko discovered that Daichi's older sister has the extremely rare blood of Chernobog, which she believes would make her powerful enough to destroy the anti-vampire organization called Abraham once and for all.
However, the blood doesn't work exactly as Iko expects, and this vampire soon finds herself forced to become the pet of Daichi and his older sister...
2 Volumes (Complete)
This could have been great hell could have gone a yuri route which would have been awesome to but it doesn't have the time to build up enough romance in any direction due to being rushed/axed ending sadly.
You can't tell what kind of manga this is going to be based on the one chapter that's scanlated, but I would compare it to Sora no Otoshimono at the moment. It's cute, fanservice-y, light-hearted, and ridiculous, with the same basic style of humor as SnO. But unlike SnO which to me showed potential for depth from chapter 1 (which was fulfilled many chapters later), I see none here. The story contains many plot devices which seem contrived, so at best I expect this manga to suffice as a cute comedy. The male protagonist is kind of funny... but he is basically ignored aside from getting tied up in a comic fashion near the beginning. The chapter would flow exactly the same way if he did not exist. The sister and the vampire princess have the strongest connection so far.
