Nazuna Nanakusa is the female protagonist and sometimes anti-heroine of the fantasy romance anime and manga series Call of the Night. She is a female vampire who encounters a middle-school boy, Kou Yamori whom he befriended with. The two of them would grow into a closer relationship as the boy declares that he wants to fall in love. In her early life, she was nurtured by Kabura Honda and was present at Kōgyō High School where she also met the detective, Kyouko Mejiro. Nazuna is mostly a chill and carefree individual. Acting arrogant from time to time with those like Kou, Nazuna gets commonly uncomfortable and distressed when a topic related to love is being discussed. Nazuna is unabashedly open about sexual topics and has no qualms about discussing them openly. Further on, she is also Nazuna is characterized as naught, which is often described as being even lower than that of a middle schooler. She exhibits this immaturity through her behaviour and attitudes toward various aspects of life, particularly in relation to sexuality and romance. She can be rude to others by casually shouting out obnoxious remarks without seeming aware of other's reactions. She has excellent socializing skills toward anyone as long they appreciate the night just like her. Due to possessing eternal life, she often gets drowned in boredom and tries to kill time by playing video games and consuming alcohol. If not, she would be usually seen hanging out outside at night around the city, often seen by Kou's side or interacting with other citizens she befriended. Not caring if others would know if she is human, she does not often openly reveal she is a vampire to anyone.