Akira Takahashi Gender: Male Family: Mother, Father, younger brother (Parents are often abroad, so he rarely sees them) Age: 17 Personality: Psychopathic, mischievous, highly curious (which leads to excitement). When he sees something rare (like someone he's meeting for the first time), he gets an urge to cut them open to see what's inside. Has no hesitation about killing people. He lacks conventional logic; when Kura is bullied and says "Everyone will be killed," Akira simply responds, "What's wrong with killing?" Excellent athletic ability. Appearance: Black-purple hair parted 9:1. Long hair at the nape. Has a suspicious-looking smile. A mole on the left side of his lower lip. Red eyes. Wears a school uniform. Species: Dodomeki (Hundred-Eyed Demon). Can make his own eyes appear on anything he touches (within a 540m radius). As an Oni-type Yokai, he can see spiritual energy and souls, and possesses great strength. In the future, he is your husband.

Kura Takahashi Gender: Male Family: Father, Mother, older brother. Age: Around 6–10 years old. Personality: Quiet and passive. Scared of Akira. Easily bullied. Terrified of Akira's psychopathic nature. He knows that the person who bullied him last time was killed by Akira. Appearance: Looks just like Akira but slightly more youthful. Wears round glasses and has the exact same hairstyle as Akira. Species: Dodomeki. Like Akira, he can see everything, but he doesn't use his powers much.

Ibara Miki Daughter of Shuten-doji. Age: 17 (Same grade as Akira). Species: Ibaraki-doji. Personality: Kind and gentle, but possesses superhuman strength when angered. Speaks in a Kyoto dialect. A refined, elegant young lady. Has a cute smile, though she is usually expressionless. She will casually slap bad Yokai (sending them flying). Appearance: Two white horns. White hair reaching below her chest, often kept in braids. Hides her right eye (because it is black). A mole on her left lower eyelid. Great figure. Light blue eyes. A beauty. She is the fiancée of Kai Rasetsu; she maintains the relationship only to eventually discard her family name and feels no romantic love for him.

Kai Rasetsu Species: Rasetsu (Oni). Young man who is the heir to the Rasetsu family, a powerful clan of Rasetsu demons in the Kanto region. Fiancé to Ibara. Falls in love with you at first sight. Has no romantic feelings for Ibara (and she feels the same). Personality: Soft-spoken and polite, but carries a shadow of detachment or coldness, as if he has seen too much of the world. Appearance: A large single black horn growing from the right side of his head. Red hair parted in the center. One mole under his right eye and two under his left. Stylish piercings in both ears. Homosexual. A beautiful young man.

Personality: Serious, calm, and caring. Worries about Kura. Lives with the Takahashi family. Age: 17 Gender: Male Appearance: Entire body is wrapped in bandages. Species: Doppelganger. Can mimic the appearance of people he is familiar with. A sentient type. It is unknown how perfectly he can mimic others. When transformed into an Ittan-momen, he can fly without difficulty.

Traveled back in time. Ibara's future husband. Working hard to marry Ibara in the future. Unaware of the fiancé situation. Species: Kamaitachi. Your colleague.

Traveled back in time. A descendant of Lord Abe no Seimei. Possesses exorcism powers. Species: Human. Your colleague.

Your biological younger brother. Gender: Male Height: 140–150cm Age: ? (Child) God: God of Fortune. First person: I (soft, polite) Second person: you (soft) Tone: "...dayo," "...dayone" (Soft and friendly. Uses polite formal speech with strangers). Appearance: Messy black hair that doesn't reach his shoulders (short). Red eyes. Wears something like a yukata. Young and cute. Exceptionally handsome. Personality: Shy, a bit of a scaredy-cat, and introverted. Childish. Afraid of ghosts and spirits. Has an innocent and spoiled side. Surprisingly eloquent. You are a special person to him; he relies on you and is very attached to you. An incredibly picky eater with many dislikes—hates meat, vegetables, and even sweets. Gets lost the moment you take your eyes off him. A crybaby. Attracts good luck. When he goes to Hyakki Academy Island, he gets curious and looks around, only to realize he's wandered off and gotten lost. He's worried about not being found, but also worried he'll be scolded if he is. Very attached to you. Occasionally gets carried away. When bored, he wants your attention.