Former [[TheHunter vampire hunter]] Kuroe Kurose is leading a very different life these days; despite vampires having killed his Hunter sister and accidentally granting him immunity to their glamour; he happened upon a young girl named Misaki who had been freshly turned into a vampire. Settling down and becoming a novelist and {{private investigator}}, he has adopted her and is trying to help her from succumbing to the EnemyWithin.

!This manga contains examples of:

* AndIMustScream: The body-snatcher is immobilized by being turned into a vampire with a permanent broken neck; then left in an abandoned basement.
* AwesomeMcCoolname: ...seriously, [[{{alliterativename}} Kuroe]] [[RepetitiveName Kurose]]? ("Kuro" means "black".) That's like naming someone Darke [=McDark=]. It is revealed to be a name he was "allowed" to take by his [[TheObiWan teacher.]]
* BadassAndChildDuo: Kuroe, a badass Vampire Hunter who has taken in tween Misaki, an unawakened vampire girl whose vampire hunter parents were killed by vampires who then turned her into one.
* BodySurf: Early on Kuroe and Misaki face a human who can steal bodies of those near him when he dies.
* BrotherSisterIncest: Kuroe wasn't ''quite'' to this level with his sister, but it was close.
* ChildSoldiers: Maria, who was trained by vampires to be an assassin.
* CurbStompBattle: Any time Kuro is pushed far enough to actually use magic, his enemy is generally dead or beaten in a matter of seconds.
* EnemyWithin: A very common trait of vampires within the series. Though said person can have a nice personality it's an inevitable fact that the monster within them will surface, just depends how long it'll take.
* MrFanservice: Kuroe "Tall dark and bishy" Kurose. Also Higure in a {{Shotacon}} kind of way. Blood Alone is technically a {{Seinen}} manga but may actually have a higher female than male readership.
* FailureKnight: Kuroe is haunted by his failure to save his sister from vampires; Misaki reminds him very much of her.
* FriendlyNeighborhoodVampires: Misaki's "vampire self" hasn't even awoken yet, Sly was changed by Orphans (those without a clan) so hates them and helps Kuroe out, and while it's likely that Higure has OffstageVillainy; he has been nothing but helpful to Misaki.
* GenderBlenderName: Kuroe's name is actually a romanization of 'Chloe', because he's inherited the powers of [[LegacyCharacter Chloe the magician]].
* [[LesbianVampire Gay Vampire]]: Higure is rather fond of his {{bishounen}} Renfields; nothing outright is stated; but he does like having them snuggle him. He also enjoys hitting on Kuroe; and while his being a ''vampire elder'' means he's dangerous, his being gay isn't demonized.
* {{Heroic RROD}}: Misaki's {{Enemy Within}} surfacing a lot quicker the closer to true death she is. It (her vampire side) warns Kuroe of this after she nearly killed by a body snatching murderer.
* TheHunter: Kuroe's old profession, these days he's more on the TrueNeutral path, since having a peaceful co-existence with the local Vampire Elder is beneficial for Misaki.
* TheObiWan: Kuroe was taught to be a KungFuWizard by his Sensei; a mage dressed in a VictorianLondon style [[GorgeousPeriodDress Black Funeral Gown]] who can StealthHiBye, and was apparently named Chloe. He refers to her as "The Lady" and other vampires call her [[RedBaron "Sinistre Femme" or "The Woman With A Forbidden Name"]]
** Doubles as SexyMentor. Just see the beginning of Volume 6.
* OlderThanTheyLook: Naturally, when dealing with vampires, but Higure the local Vampire Elder looks like a child the same age as Misaki.
* OurVampiresAreDifferent: ...but apparently not ''that'' different. They are remarkably like the ones from ''TabletopGame/VampireTheMasquerade''. Sunshine is actually a weakness, [[OurVampiresAreDifferent surprisingly.]] It is commented that they're mostly imported from Europe. One major difference is that it takes a while for the EnemyWithin to kick in; it's accelerated should a vampire get injured.
* ReluctantMonster: Misaki is a complete innocent.
* TheRenfield: They are actually called "Renfields", servants to vampires who are given vampire blood. This generates a feeling of love and obedience.
** Maria gets adopted by Higure, and he's a perfect gentleman who simply tells her that she's now part of the family. He doesn't attempt to control her will at all. Of course, she's not really his taste...
* SupernaturalMartialArts: Kuroe and his sister know a form of "magic martial arts" that let's them fight vampires.
* UndeadChild: Both Higure and Misaki so far have been friendly; Higure is competent; but he reveals that ultimately all undead turn into monsters. It's just a question of how many centuries it takes.
* VampireDetectiveSeries: It's not ''Kuroe'' who is the vampire, but it's definitely the genre.