I was interested in checking this work out, because I normally like vampire stories in BL, however, it felt like this manga opted for the absolute standard story ever, which cannot be saved by the lovely art either.
Basic plot goes as follows: Gay Vampire is scared to turn human lover into vampire, Evil Other Gay Vampire comes and goes "hoho you will lose him one day", cue the drama, lots of emotions about mortality and loss, you know the drill.
However, this manga achieves nothing new, and unfortunately stumbles along the way as well. There are countless moments where tonal shifts break the tension of a scene, some jokes really feel out of place. The backstory of "how the human and the vampire couple found each other" was just brushed over in the first chapter. It would have been nice to actually see the two get together, or figure out what the mystery power of this strong man is, but no, it starts off immediately with them being in a cooking relationship, where the human comes over every day to cook for the vampire, as if this was the most normal thing ever. It's not engaging at all.
The longer I read this manga, the more I felt that it was the stereotypical story beats that moved the story along, not the characters themselves. Some decisions really feel like they were only added to raise the tension, not because this character wanted to do this. In addition, I was often confused by what the character motivations actually are, especially romantically.
Not to mention the weird dialogue phrasing in sex scenes sometimes, that made consensual sex scenes feel noncon or dubcon, and I only found out in the afterword by the author that this way of writing was ment to depict characters as "inexperienced" or "virgins". That absolutely didn't come across, and I was somewhat uncomfortable and confused during these scenes.
Overall, yes, the art is good, but the story is really lacking. I can only recommend this to hardcore "vampire BL" fans, for anyone else, I think this is something that can be skipped.