The manga may not have a great script / art, but it certainly fulfills its sad manga role. This is because the work does not address the theme "vampires", but how sad it is to have to deal with a loved one experiencing an incurable disease, the feeling of helplessness and sadness in the face of an immutable situation. Death here is approached in a natural way and you know what happens from the middle of the manga. It's a great manga to read quickly and make you reflect on issues of life or existentialism, but nothing in depth, like Neon Genesis, etc. Manga is certainly a goodthing if you like this kind of sad story with a nilist simplified, but it is approached in a superficial and ordinary way.

My geral score for this one is 7, because I certainly love reading a sad story.

Peace out <3