If you think about it, the story is not especially dramatic. However, the author is so skillful in capturing the characters emotions, through image, dialogue, and use of character monologues, that the reader cannot help but be overwhelmed by the intensity of the emotions. This was handled with so much skill and care. I cried.
Words aren’t enough to describe how much of a masterpiece this manga is. More than any other manga it felt like I was watching a movie. The mangaka is able to evoke an intensity of feeling that the MCs have for each other. What really fascinated me though is that there is so much potential for additional material via the mysterious side characters back stories.
What really made me cry though is how the seme loved the uke since he was a child and the uke made the seme a vampire to save his life. Those flashbacks were so beautiful.