Aine ; : :The main female protagonist of the series, Aine is a shy but innocent high school girl who does not know how to hide her feelings. Her home life is rocky, her parents seem to ignore her, and she is mostly left to her own devices. Hurt by this emotional neglect and lacking confidence in herself, she clings to and relies on Sakuya to protect and defend her and feels guilty about her inexperience and doubts. When Sakuya tells her parents that Aine will be living with him, they realize they are losing their daughter to a dangerous world. Sakuya eventually convinces Aine's father that he loves her and will protect her, so they can live together. Aine has to fight to find her own place within the record label, and prove herself repeatedly. She comes to be seen as important to Sakuya's emotional wellbeing and to the band and earns her place with her innovative concepts and her lyrics. Towards the series end, following her rape, recovery, and the death of her friend, band producer Hitoshi Takayama, she grows up, matures, and becomes stronger for herself, Sakuya and others.
Λucifer ; : :The main character of the series, Sakuya is the highly talented lead singer of Λucifer. Seventeen and still in high school, he is also the band's youngest member. He transfers to Aine's high school to get closer to her. While he respects and trusts Yuki, the only other band member he is close to is Atsuro. He is known for his striking blue eyes, inherited from his American father. Sakuya is also rude, physical, and does not care about life, even when he begins to sing with the band Lucifer. Sakuya has spent most of his young teenage years paying off his mother's debt at the club where she worked. Like his mother, he sang and played the piano for club guests. But to make more money, he also worked as a
male escort prostitute on the side. He was able to do this because he appears older than his years. His harsh childhood experiences have caused Sakuya to lose trust in people. But when he meets high school girl Aine, he shows a new caring and sensitive attitude towards others, especially to Aine. When she first starts working for them he tells himself that he is selfishly using her, but before long his true feelings emerge. ~ See Sakuya's one-shot and Vol. 10, Lucifer's Legend. Sakuya also makes an appearance in "
Love Celeb" as Kirara's producer. ; : :Yuki is the leader of the band Λucifer and one of its guitarists. He is the one who stands up to management for the best interests of Lucifer and his bandmates. In the anime only, Yuki is Santa's old friend and a co-founder of the band. He has the strongest sense of leadership and responsibility. In the manga, Yuki is the sole founder of Lucifer, who scouted Bi-Jazz band members Towa and Atsuro. ~ See one-shot on Towa and Vol. 10, Lucifer's Legend ~ It is often Yuki who knocks sense into Sakuya – sometimes almost too literally – when Sakuya's uncontrolled feelings blind him to Aine's hurt and pain, or his bandmates' exasperation. Yuki is the eldest son of a famous traditional
Noh theater family, and must choose between the band and his family when he tells his father he wants to give up Noh and concentrate on the band. His father disowns him, but in a later episode of the anime series the two have a friendly relationship. In the manga, although he returns to Noh theater after Lucifer officially disbands, Yuki's relationship with his parents is not mentioned after Marriage Phrase, Vol. 6. Yuki is in an arranged marriage with Maria, also from a Noh theater family, and they have a child. Maria was in love with him but felt he treated her like a little sister. When eventually Maria finds out about Lucifer, she sneaks out with him to watch the band rehearse. Yuki's attitude changes when Sakuya makes advances to her. Maria supports his decision to be a guitarist in a band, but when Yuki's father disowns him he briefly divorces her, unsure of his ability to take care of a wife at that time. He begs her to remarry him when the band signs its first contract. ; : :Λucifer's drummer Santa's nickname comes from his birth date, Christmas Day. Santa is easy-going but boisterous. In the anime only, along with his girlfriend Yumi he is a former member of the band Climb. He breaks up the band by leaving and joining Lucifer when Yumi cheats on him. Santa comes from a large family, loves ramen and beer, and has a tendency to put his foot in his mouth at the worst times. It is through Santa that Lucifer guitarist Yuki meets Sakuya. Other details of Santa's background are little known compared to his bandmates. He is the only one still single at the end of the series. In the manga (Vol. 10, Lucifer's Legend), Santa was the drummer in a heavy metal band called Shinigami. Yuki knocks him against a wall, angry to be taken for a woman, when Santa makes a pass at him when they first meet to discuss Santa joining Lucifer. Santa then agrees to a session. ; : :Nicknamed "Towa", he is Λucifer's bass guitarist. He is enigmatic and does not joke around a lot. While he is not shy, he can be quiet and secretive. Towa and Atsuro are best friends from high school. They joined the band Bi-Jazz together. Much to his dislike, Towa's
androgynous good looks mean not only women but also men swoon over him. His parents wanted a girl and so raised him as a girl for the first few years of his life. Cursed with fair, wavy hair and an effeminate beauty, and an inability to tan, Towa's looks blur gender perception boundaries so much that some people ignore his natural gender and do not consider him a man. His high school bane was receiving declarations of love from other boys, which Atsuro would tease him about. Although irked at first, Towa decides to use his beauty as a shield. The only person to whom he reveals his true self is his childhood friend and current girlfriend, Miya, who is Λucifer's official makeup artist. They grew up together and know each other so well he was afraid she would see him as a girlfriend not a man. Miya herself is something of a tomboy, and considers herself rather plain. She and Towa complement each other. Where she sees him as fully a man, he sees her as fully a woman. ; : :Atsuro is one of Λucifer's two guitarists. As the band's friendliest and most cheerful member, he serves as the comic relief. Atsuro's long-time girlfriend, Yuuka, is actually his stepsister, and he desperately tries to keep their relationship a secret from their parents, the media, and even his bandmates. Their biggest obstacle is that they are registered as siblings, and so face the possibility that they cannot marry. Shinjo never fully explains the legal complications, even in the one-shot in which Atsuro and Yuuka get married in the United States without their parents' blessing. Aine is the first person to find out about Atsuro and Yuuka. She tells Atsuro she will keep their secret, even though the paparazzi see him with Aine and mistakenly report that Atsuro is having an affair with Sakuya's girlfriend. This causes Sakuya and Atsuro to fight, until Yuuka announces to the band that she is in love with Atsuro. The band members, except Sakuya, reveal that they had suspected this all along. By the end, Atsuro and Yuuka make a conscious decision to be together even if their parents object, and to be open about their relationship to the public. ==Production==