be her preserved umbilical cord kept by her father before he died, thus rectifying the missing parts of her history. Ko currently holds the item to protect it. Humans Ko's childhood friend, who lives in the same apartment complex as him. A busy-body office worker and one of Nazuna's clients from her massage gig. After hearing about her struggles in life due to her heavy work schedule, Ko vows to help her, as he feels they share the same plight, and will offer to turn her into a vampire when he becomes one himself. A popular boy at school, and one of Ko and Akira's old friends, who also hangs out at night. Seri's vampire underling. He was saved by Ko, then later asked Seri to make him a vampire after Ko helped him and Seri understand their feelings for each other. He is often referred to as 'Draggo', or 'Menhera-san' in the manga. A vampire-hunting detective. She is a heavy smoker. She was Nazuna's first attempt at creating a familiar when they were classmates at night school. The attempt failed because Anko did not meet the prerequisites to be turned. Later when Anko arrives home she is surprised by her family throwing her a birthday party. Her father gifts her a zippo lighter. Suddenly the lighter begins to agitate her father when he touches it, sending him into a frenzy resulting in him killing her mother. Anko understands immediately that the lighter has something to do with it and is able to pin her father down by forcing the lighter on him until the daylight destroys him. This incident causes her to loath vampires, kickstarting her hunting crusade. It is also revealed that her father was cheating on her mother potentially with the vampire Kiku Hoshimi. Vampires A flirtatious vampire who resembles a gyaru. She approaches Ko when she hears that Nazuna is spending the night with a human where she attempts to suck his blood, until she is stopped by Nazuna. The two do not get along well, as she questions why Nazuna is spending so much time with Ko while not having turned him yet. A vampire who doubles as a teacher who teaches night classes. She is not as accepting of Ko in her first encounter with him, but becomes willing to let him stay with Nazuna so long as he fulfills his intentions on becoming