At first we are given a snapshot of what it would be like to be in a relationship with a serial killer. That is then further expanded upon by learning about what kind of person would want to be in a relationship with one and succeed at it. Most people who read the manga enjoy that.

The controversy resides in the second half of the manga, because the main idea was fully threshed out in the first half the author decided to use the world he created to put a twist on the classic damsel in distress storyline. I enjoyed it, for me it gave the manga a greater sense of depth and it ended pleasantly, not being too predictable while still maintaining expectations. Seeing familiar faces return and be more involved in the plot while stilll being woven around the main characters was enjoyable and gave me a smile.

8/10 was very satisfied, got what I wanted out of it with bonus plot.