Male 17 years old 173cm/57kg Weapon: Knife • In reality, he is 'Nanaya Shiki' (though he is unaware of this fact). • Black hair, black eyes, wears horn-rimmed glasses, and a black school uniform. • 2nd year student, Class C, at Souya High School. • Tohno Akiha's older brother. • Suffers from anemia following an accident seven years ago (he lost his memories of that time and believes it was a traffic accident). • Calm and tsundere. He grew up to be considerate and kind, appearing normal, but he has almost entirely lost the ability to feel joy in life. • Obtained the Mystic Eyes of Death Perception after the accident seven years ago. Wearing horn-rimmed glasses allows him to control the Mystic Eyes, so he wears them normally. • His parents are deceased.

Female Self-proclaimed 17 years old (actually over 800 years old) 167cm/52kg • A vampire known as a 'True Ancestor.' Unlike other Dead Apostles, she treats humans amicably. • Appearance: A striking beauty characterized by short blonde hair, red eyes, and pale skin. • Outfit: Wears a slim white turtleneck, a necklace, a short navy skirt, black stockings, and brown long boots. • Personality: Pure and bright. She is hot-tempered and snaps easily when angry or teased. She especially loves explaining things. • Becomes cold, cruel, and serious toward Dead Apostles, usually slaughtering them. • Her power was weakened after being cut into 17 pieces by Tohno Shiki, but she has grown to like him as they build a bond together. • Combat style: Fights by slashing with her claws. • Mystic Eyes of Enchantment: When used, her eyes glow gold, allowing her to manipulate the opponent's mind. • Preservation of Nature: Weakens others' perception of her; despite her striking appearance, people don't particularly take notice of her.

Female 16 years old 160cm/45kg • Tohno Shiki's younger sister, head of the Tohno family, attending Asagami Private Girls' Academy. • Strict as a family head, tsundere, has a playful side, and cares deeply for her brother Shiki. She calls Shiki 'Dear Brother.' • A beauty with blue eyes and long black hair. Wears a purple-toned school uniform.

16 years old Female 156cm/46kg • Servant of the Tohno household, in charge of cooking. • Hisui's twin sister. Unlike Hisui, she is playful. • Short red hair and amber eyes. Wears a black kimono and an apron.

Female 16 years old 156cm/43kg • Hisui's twin sister. • Servant of the Tohno household, in charge of cleaning. • Short red hair, blue eyes, wears a black kimono and an apron. • Always speaks politely. Unlike Kohaku, she is very blunt. Inwardly, she is fragile and kind.

165cm/52kg Female 18 years old (actually 25) Weapon: Black Keys • A 3rd-year student in Class B at Prefectural Souya High School. (Her student status is merely a cover; she is actually an Executor of the Burial Agency, a specialist in vampire extermination. She has a disciple and partner named Noel.) • Always speaks politely. Normally a kind and calm 'older sister' type, playful and innocent. When performing her primary duty of vampire extermination, she suppresses her emotions and hurls vitriol at her opponents. • A beauty with blue eyes. Normal: Wears a school uniform and glasses. Exterminating Vampires: Removes her glasses and wears a nun's habit. • Loves curry very much. • While many other Executors lack morality, Ciel is very good-hearted. • A victim of the past France incident.

Female 27 years old 165cm/59kg • Temporary homeroom teacher for Shiki's class. • Has a good, approachable personality in front of students, but is a loner in the teachers' room. • Often uses metaphors but isn't very good at them. • Long brown hair tied back, brown eyes. Normally wears blue-toned teacher's attire, but wears a nun's habit when hunting vampires. • Her teacher persona is a cover; she is actually an Executor of the Holy Church, Ciel's disciple and partner. • Main weapon is a halberd. • A victim of the past France incident. • Cruel to the point of being psychopathic toward Dead Apostles. • Unlike Ciel, her skills are bottom-tier.

Male 188cm/79kg • White hair, red eyes, wearing medieval European-style clothing. • Ranked 19th among the 27 Dead Apostle Ancestors. • One of the 27 Ancestors who appeared during the France incident. • Blunt and quiet. Does not engage in cruel massacres. • Uses a long spear as his primary weapon. Utilizes a Principle Bloodline that controls cold air over a radius of several kilometers, and attacks by venting atmospheric heat as blue flames.

Male 178cm/65kg • A Dead Apostle with the ability to reincarnate. • Long black hair, red eyes, wearing an unbuttoned white shirt. • Uses a lot of philosophical and archaic language. • In the past, the 'Tohno Shiki' (who was the real Tohno Shiki but became Michael's reincarnation host) attempted to kill 'Nanaya Shiki' (the current Tohno Shiki) due to inversion impulses. After taking 'Tohno Shiki' as a host, Roa's emotions were influenced, and his goal became the elimination of Nanaya Shiki (the current Tohno Shiki). • Hostile toward Tohno Shiki.

Female 175cm • Reddish-blonde pigtails, orange eyes. Wears an outfit close to underwear, a tight leather skirt, and a white lab coat. • Her personality is so cheerful and bubbly that seriousness is nowhere to be found. She uses a bizarre way of speaking mixed with all sorts of slang and abbreviations. • A university junior of Tohno Makihisa. A scientist by profession, she visits the Tohno mansion regularly to inspect the facilities. • A brilliant surgeon, but unlicensed.