Nazuna Nanakusa | A offering for a new beginning

Nazuna Nanakusa is a carefree vampire from birth who was raised by Kabura Honda before attending a night school, where she met and befriended Kyouko Mejiro. By the time she chose to live a life by her own presence, Nazuna encountered Kou Yamori, a night roaming middle schooler in Komori, whose blood tasted astonishingly delicious. In an exchange for spending time with Kou every night and drinking his blood, Kou intended to fall in love with Nazuna to become a vampire himself, a topic that discomforted Nazuna.

As time passed on, Nazuna's relationship with Kou grew more intimate, with her wishing to protect his life. However, when the two came into conflict with Nazuna's vengeful first friend, Kyouko, she chose to take responsibility and clash with her for the sake of the vampire race. In the climax of the fight, Nazuna refused to murder Kyouko, and after the latter's attempted suicide resulted in Kou's “half-vampire” self to emerge, the two finally reconciled. Whilst investigating Kou's new, strong, and maniacal physiology with Kyouko's aid, Kou had a fallout with Mahiru Seki, so Nazuna, along with a large number of new friends, chose to support him and travel to Hokkaido to help Kou and Mahiru make amends. Unfortunately, the events that occured on Hokkaido put a strain on Nazuna's and Kou's relationship.

Nazuna is a reasonably short woman, standing just a head or so higher than a middle school boy. Her body is skinny and petite, with a small bust and spindly arms, the latter of which hide her immense vampiric strength very well,Nazuna has fangs and sharp nails that denote her vampiric nature.

Her hair is a very light purple, appearing almost grey, not silver. She keeps it long enough to reach the middle of her back; however, she keeps it in two long braids that she then curls up and pins to the rest of her hair, making two large rings. She has bangs that go down almost to her eyes, covering her eyebrows, and two medium-length tufts of hair that hang down from the middle of her head, framing her face and ending just at her mouth,she has red lips.

She has fierce blue eyes. Instead of standard irises and pupils, her eyes have an almost target-like appearance with black rings that intersperse sections of her irises, getting smaller as they get to the middle until they reach the pupil. This gives her a piercing gaze that varies between uncanny and uncomfortable depending on how she looks at someone. She wears light-red eye shadows and have big hair color eyelashes.

Nazuna can most often be seen wearing a large piece of clothing resembling a cross between a cloak and a hooded jacket. This large piece of clothing covers nearly all of her body, going down to the middle of her calves and leaving only her hands exposed.

Underneath the large cloak, Nazuna's general attire is a pair of black denim shorts that go down to just past her upper thigh and a black leather cropped keyhole shirt with no sleeves. Unlike other keyhole tops, hers has a collar that goes up higher and covers a good portion of her neck. It also has a similar back hole showing her shoulder blades. Hers is also very cropped, short enough that it ends just beneath her breasts and leaves a large section of her stomach and back uncovered. She also wears a pair of thigh-high leather boots with wedge heels and occasionally leather gloves to complete her distinctive look.

Just like almost any other vampire that has appeared, she is described as pretty or cute. In fact, her looks catch the attention of multiple attendants at a pool party.

Nazuna is a very laid-back individual. She is not overly friendly but has a very relaxed presence in most situations. She's willing to talk to just about anyone and prefers keeping on good terms with most people. However, there are exceptions like Nico Hirata and her clique, who she finds very annoying and isn't interested in being on good terms with until later. Nazuna is often fairly insensitive and often drops unintentionally mean comments or actual insults, though she sometimes feels regret for it later on. She isn't shy to threaten others with death or suggest killing someone but doesn't have it in her to kill people she is/was close with. If another vampire shows interest in her prey, Nazuna becomes highly agitated and possessive.

Nazuna gets along with people who enjoy the night and loves to show people new things in the town's nightlife. She isn't used to modern technology, owning retro gaming consoles, not owning a smartphone, and carrying an old-school brick-like cellphone. For that reason, she can become very excited if something new presents itself, even if it's something like a walkie-talkie. Despite pretending to know everything about the night and having fun, Nazuna spends most of her time drinking alcohol and playing video games and lives a boring life.

She doesn't advertise that she's a vampire but is more open about it than expected; whenever someone starts to notice, she tells them that she is a vampire. Nazuna mostly gets blood by finding insomniacs, helping them fall asleep, and then feeding on them. Unlike other vampires, she initially has no interest in creating underlings, actively trying to remain unpopular. She cares a lot about not being a bad person and, at one point, wants to leave Kou because she feels guilty about having pretended to be someone she isn't.

She has a rough and impolite form of speech even Kabura or Nico says how Nazuna is abrasive besides perverted and impolite personality aside, Nazuna is a genuine expert in her line of work, having extensive knowledge about the art of massages and human anatomy. That doesn't mean she acts like a professional at her job; when Kiyosumi Shirakawa unexpectedly arrives at her door, she forces the inexperienced Kou to step in for her due to feeling tired from giving him a massage prior. When Kou hesitates, Nazuna tempts him with the promise that he will get to touch Kiyosumi's attractive body. When Kou still refuses, Nazuna guilt-trips him by saying she didn't work for a month to spend time with him, and then tempts Kou further by promising him half of the salary and another kiss.

Nazuna is often defined by her strong immaturity, being less mature than a middle schooler. She is very open about sexual topics, has no problems discussing them, and loves to make dirty jokes. However, she is very romance-averse and reacts strongly in embarrassment to the word "love" when used in the romantic sense.

Ten years before the story started, Nazuna was very different from the person Kou knew. She was gloomy, inexperienced, lacked common knowledge, and quickly accepted anything someone told her about the world, much like a child. Nazuna's sole source of blood was people lying around in public, such as homeless people or drunkards. Her first friend (and attempted underling), Anko Uguisu, whose real name is Kyouko Mejiro, served an essential role in shaping the personality she would develop later.

Nazuna undergoes noticeable change and growth as the story progresses, becoming more serious, mature, responsible, and sociable. Unlike when she gets angry, Nazuna often bears a faint smile when she feels gloomy or sad. She is a person who often knows more than she lets on and doesn't like to share her personal secrets. For example, she hides her past friendship with Kyouko Mejiro from not only Kou but also her fellow vampires until circumstances leave her no other choice.