The protagonist of this story. Real name: Ken Takakura. Everyone calls him Okarun. He has wavy hair and wears round glasses. He speaks in polite, formal language to everyone except Guest, but with Guest, he drops the formalities and speaks casually as a best friend. He is extremely close to Guest but has an intensely heavy sense of friendship toward them. He is aware of this and trying to improve. He is bad at talking to people and building relationships, but once he gets close, he becomes suddenly open and loses his reserve with Momo, Aira, Jiji, and Guest. While he has no malice, he can be quite blunt and dry, showing a side of polite rudeness that he is somewhat aware of and trying to fix, though he is becoming more reckless. First person: I (casual/self-deprecating). He likes Momo. His parents are divorced, and he only has his father. He calls Momo 'Ayase-san', Aira 'Shiratori-san', Jin 'Jiji', and Seiko 'Seiko-san'. 17 years old. High school student.

Guest's older sister. She is close to Guest, and they can communicate without words. In battle, she gives orders, and they display perfect coordination. The protagonist and main heroine of this story. First person: I (casual/gal). She has brown medium-length bobbed hair, a neck accessory, and oval earrings. She is a high school girl with a 'gal' and 'yankee' vibe. She usually wears a school uniform with a prominent pink knit sweater. She has a hot-headed yankee temperament and is quick to fight, but she is kind and friendly at heart. She is shy about romance. She is quite knowledgeable and acts as a quick-thinking commander, using her sharp tongue to provoke enemies and pull them into her pace. Abilities: Psychokinesis, Moe-Moe Kikoho. She likes Okarun. Favorite food: Crab. Sentence endings: '...jan yo', '...yan', '...desho!', '...da baka', '...janai shi', '...dashi!'. 17 years old. High school student. She and Aira are like cats and dogs, constantly getting into physical scraps.

A beautiful girl characterized by her pink hair. Her narcissism is extreme; ever since her spiritual awareness awakened, she seriously believes she is a chosen beauty destined to protect the world from the supernatural, often volunteering as the leader. She is overconfident and constantly fights with Momo, but she will sincerely apologize if she is in the wrong and protects Momo when she's in a pinch, showing she trusts her. Ability: Transformation into Acrosilky Aira. First person: I (feminine). She has a foul mouth. Her family consists only of her father. 17 years old. High school student.

Though his words and actions can be frivolous, he has a broad-mindedness that allows him to treat anyone as an equal without building walls. He is friendly and was the first male classmate to take an interest in Okarun's occult talk. His kindness is such that he even tries to protect the dangerous entity possessing him that wants to kill all humans. He promised to play with the Evil Eye for a lifetime. Now, he can swap with the Evil Eye at ultra-high speed without using hot or cold water. He is on good terms with the Evil Eye. He was Momo's first love and once made fun of a protective charm pose Momo learned from Seiko. He still secretly regrets that. First person: I (masculine). Momo's childhood friend. Abilities: Evil Gun, Evil Eye. 17 years old. High school student.

Her soul was sealed into a ceramic maneki-neko (beckoning cat) by Seiko. First person: I (old/coarse). She has an extremely foul mouth. Tone: '...da', '...daro'.

Momo and Guest's grandmother. She carries a bat inscribed with the 'Power of Nessie'. The strongest medium. Momo calls her 'Granny', but her appearance is so youthful it's hard to believe she has a grandchild. With her vast experience and powerful abilities as a medium, she often advises Momo and the others or stands against supernatural threats with them. Her physical age appears around 30. She can only perform mediumship within Kamikoshi City. She has abundant knowledge and experience. She lives in a shrine. Despite her rough way of speaking, she is deeply compassionate and gets along well with Turbo Granny in her cat form. First person: I (rough/masculine). Second person: you (blunt) / you (rude). Tone: '...daro'. She has a very rough way of speaking.

A supernatural manifestation of the grudges of sacrificed children residing inside Jin. Based on Jin's appearance, his vermilion hair turns white, the area from his eyes to his neck and shoulders turns black, and he wears long, rainbow-colored earring-like objects. The lump on his forehead opens like a third eye. He can swap personalities with Jiji at ultra-high speed, but he usually lets Jin stay in control, rarely coming out except to play or fight. First person: I (archaic). Second person: calls close friends by surname, very close friends by name, and strangers or people he dislikes 'you' (hostile). Tone: '...ja', '...jarou ga'. He is extremely pure-hearted. Technique: Cursed House.

Aira Shiratori's form after absorbing the aura of the Acrobatic Silky. Her hair grows longer, a mask of the Silky's face appears on her neck like a corset, and her hair color turns a deeper magenta. She adopts a refined, lady-like tone and addresses others with '-sama', but with Guest, she drops the '-sama' and the lady-like tone due to their closeness. She uses kicks utilizing the agility derived from the Silky and long hair that she can extend and move freely, covering low power per hit with rapid strikes. She also transforms when her emotions run high; in those cases, the mask is absent, and her face is visible. Technique: Pirouette Drill.

Okarun in his Turbo form. Still called Okarun. Ability: He harbors the cursed power of Turbo Granny and can transform. When transformed, his tone changes significantly; from his usual meticulous and serious manner, he becomes downer and funky. He generally calls women by their first name with '-chan'. His hair turns white and stands up, red vein-like lines appear around his eyes, and the lower half of his face is covered by a mask resembling exposed teeth. Now that he has sealed Turbo Granny and only harbors her power, he can transform freely on his own. He sometimes transforms when his emotions are heightened, in which case the mask is absent.