At first glance, he is a quiet, gentle, and studious boy, but due to past experiences, he possesses a somewhat peculiar outlook on life and death. He holds the Mystic Eyes of Death Perception. His personality is serious and kind-hearted; he is fundamentally neutral and helpful, unable to ignore those in trouble. He is particularly soft-hearted toward women. However, much of this stems from brainwashing and the teachings of Aoko; at his core, he is a naturalist who lives like a hermit. Because he was sickly and could have died at any moment, he tended to be isolated at school. While he has few confidants, those who can accept his weakness tend to become deeply fond of him. It is a charming quirk of his that he becomes quite the poet when he takes off his glasses. Though he is a man who does not dream, he begins to dream frequently due to external influences after returning to the mansion in Kagetsu Tohya.

An emotional, innocent, and sometimes selfish and whimsical woman, much like a cat. However, she was originally a personality-less combat doll; her current cheerful personality and ego seem to have been born from a bug-like error during the process of regenerating her body after it was cut into seventeen pieces by Shiki. Usually bright and airheaded. Due to her easygoing nature, fans have given her the somewhat unflattering nickname "Airhead Princess." However, she is said to be fundamentally pessimistic and introverted, often prone to negative thinking. As a princess, she is well-educated, but her lack of social experience and self-control makes her selfish and whimsical traits stand out. While her cheerful side is often highlighted, she surprisingly shows a blunt attitude toward most people; she doesn't treat just anyone that way. Perhaps because she is a True Ancestor who judges based on natural providence, she doesn't hate humans, but her stance is basically that she has no interest in humanity itself. The reason she shows a friendly attitude is that she recognizes someone as an acquaintance, a friend of Shiki's, or someone she can trust or find interesting. Overall, she is a character with a very clear attitude: she likes what she likes and has zero interest in what bores her. A blood-sucking species known as a True Ancestor.

She appears serious at first, but in reality, she is quite slovenly and lazy. She does her work perfectly but is careless with the cleanup—a bit of a haphazard streak. Perhaps this is a rebound from the "good person" persona she maintains at school. She has a personality that can't leave messy or depressed people alone and finds herself meddling; she is often described as sturdy and vigorous. However, it's a different story for someone she has grown to love; she adds a side of herself that enjoys playing minor pranks out of mischief and likes to fluster the person she likes. While she possesses a cold ruthlessness that disposes of Dead Apostles without mercy, she is a softie at heart, which can lead to hesitation depending on the situation. A member of the Burial Agency. A massive fan of curry.

Strong-willed, proactive, and decisive, she always maintains the initiative even in family head meetings within the Tohno household. She has mastered all the proper etiquette and is a young lady who perfectly possesses the talent required of a head of house. As for her true nature, she is a feisty girl who is strong-willed, proud, and hates to lose. She often directs harsh words at Shiki, who, despite being the eldest son, leads a disorganized life and frequently slips out of the house at night. Before Shiki was disowned, she was a timid girl attached to her brother, so Shiki was surprised by the gap between the Akiha in his memories and the one before him now. In her heart, she loves her brother, Shiki, but she feels a sense of guilt toward him for having to live apart for eight years; while she wants to be kind, her own stubbornness and Shiki's own carefree personality prevent her from doing so. However, as they say, the one who falls in love first is at a disadvantage; in matters of romance, she is very weak against earnest displays of affection. In those moments, she shows a very heroine-like, devoted, and cute side.

Hisui's twin sister and a servant serving the Tohno family. Her duties mainly involve the mansion's financial management, cooking, and tending the garden. Her work performance is perfect, but on the other hand, she is catastrophically bad at tidying and cleaning. This is managed because she and her sister Hisui have a complementary relationship. Truly twins. She has a bright, cheerful, and high-spirited personality.

A servant serving the Tohno family and Kohaku's twin sister. Compared to her sister, she appears expressionless, but her face is simply stiff; she is actually quite emotional. Polite, modest, and performing her duties calmly and accurately, she is the very model of a maid. However, she is also a woman with a surprisingly strong core, speaking up when she feels something needs to be said. This tendency appears most often toward Shiki and Kohaku, with whom she has deep relationships, so it can be seen as a sign of intimacy, though she can be quite blunt with them. Having served the Tohno family since childhood, she is socially inexperienced; perhaps due to a certain past experience, she dislikes crowds and has a phobia of men. She used to show a rejection response even to Shiki's light touch, but as they deepened their interaction, she gradually began to trust him, and he became the sole exception to her phobia. Her bond with her sister Kohaku is also extremely strong; they care for each other so much that they would risk their own lives to save the other.

Another so-called "ordinary" girl. She is somewhat introverted and reserved, with a mental age appropriate for her years. She is easily swayed by circumstances and has a somewhat strong negative thinking side, but she is fundamentally honest and bright. Because of her friendly personality that allows her to get along with many people, she had many friends of both genders at school. She might actually have a stronger core than she seems.