shortly the story is about vampire and vampire hunter and vampire is in love with hunter same time when hunter is trying to kill a vampire (keyword trying) and don't understand she's own feelings.
It's sad that this got cancelled because the story and characters feel like they really need manga to continue.
The story may feel like you only read the beginning of the story but that little beginning make you feel really happy.
So you! If you are thinking about not read because it is cancelled think again. It only takes a little bit of time and it makes you smile while reading it. Even if you aren't a yuri fan you can really enjoy reading this.