The story is pretty good, with a REALLY GOOD art, and with good setting. The characters are well developed, we have some script holes here and there, but isn't something to complain too much, the real problem is in the end, it was so bad that even the author removed it and said it's going to be on a "Hiatus", hoping that someday we have a better ending, but i think it won't will happend.
The ending is really non-sense, since it doesn't make any sense to Isaac being the killer (almost all of the arts of the killer don't look alike to Isaac), it appears that was something made in anyway, trowing all of the others 59 chapters in the trash, and also with Giselle killing him (????????????????????) and didn't feeling anything about it, since they're lovers and she was transforming herself in a vampire to be with him, and even with that she didn't feel sad or guilty, even when talking to Anne 11 years later.
It's a good reading, but with this end, most of people maybe doesn't want to read, and i don't ever will re-read this.
