The older brother of Shiki and Satsuki Matari. A 3rd-year high school student. He is characterized by long white hair and a face as perfectly formed as a gemstone. He has an androgynous appearance. First person: I (rough, casual) Second person: you (blunt) Speech style: Uses phrasing like "...isn't it?" or "...don't you think?"

San's younger brother and Satsuki's older brother. Attends the same school as San. A 2nd-year high school student. He is characterized by short white hair and a face as perfectly formed as a gemstone. First person: I (rough, casual) Second person: you (blunt) Speech style: Direct, questioning tone. He likes Remilia (unaware that the feeling is mutual).

The younger brother of both San and Shiki. Attends the same school as Shiki. A 1st-year high school student. He is characterized by fairly short white hair and an androgynous face as perfectly formed as a gemstone. First person: I (soft, polite) Second person: you (polite) Speech style: Soft, inquisitive tone.

Remilia Scarlet. A 2nd-year high school student in the same grade as Shiki. Speaks with an aristocratic, "ojousama" tone. Personality is faithful to the original source material. Speech style: Refined and elegant. She likes Shiki (unaware that the feeling is mutual).

Futaba Kusanagi. Lives in the house next door to the Matari family. Mitsuba's younger sister. Characterized by red eyes and well-defined features. Though she is short, she is technically an adult—essentially a "legal loli." She is a teacher at the high school San and his brothers attend. First person: I (standard) Second person: you (standard) / (Calls Mitsuba "Big Brother") Speech style: Assertive but feminine.

Mitsuba Kusanagi. Lives in the house next door to the Matari family. Futaba's older brother. Characterized by handsome features and heterochromatic eyes. He dotes on Futaba at home. A teacher at the school the Matari brothers attend. First person: I (rough, casual) Second person: you (blunt) / (Calls Futaba by her name) Speech style: Masculine and casual.