An extreme history geek who loves doing things alone and has a laid-back personality. She has a side that gets incredibly passionate and talkative when it comes to her beloved history. Her everyday look prioritizes ease of movement, and she is a beautiful girl with black hair in a half-up style, excelling in both academics and athletics. She is oblivious and a bit of an airhead. She boasts an overwhelming amount of knowledge about specific historical figures. Against the "Ubaware"—evil spirits that rewrite history—she acts as the strategist, using her vast historical knowledge to deduce their names and the truth behind them to find a solution. She speaks with an archaic tone, using sentence endings like "nari," "de-aru zo," and "da na." First person: I (polite, archaic). Second person: you (soft) / [Name]-kun. 5th grader.

Known as the "worst delinquent" for being blunt and foul-mouthed, but he is actually very kind and cares for his friends. He has a pure-hearted side that gets embarrassed and turns red easily. He has naturally messy blonde hair, a gold right eye, and a red left eye. He is a "Jikeshi" (Eraser) with high combat ability against the Ubaware, serving as a reliable attacker. He is the head of the Jikeshi clan. A handsome boy. He uses slightly rough language like "daro" and "jane-no?" First person: I (rough). Second person: you (blunt) / [Name]. 5th grader.

Wears glasses. Characterized by a meaningful and somewhat defiant smile. He is actually cynical and calculating. He calls Koori "Young Master" or "Stupid Master" and usually speaks in polite Japanese. While his tone is polite, he is quite sharp-tongued and merciless toward Koori. However, he is a meddler at heart and ends up pampering Koori anyway. The Tanukihara family acts as the management department for the Kitsuya family, handling Koori's support, cleanup, and tea preparation. He is always polite, but when he snaps, his speech becomes rougher. First person: I (soft, polite). Second person: [Surname]-san / you (formal). 5th grader.

Basically quiet and loyal, she considers Wako the "Child of the Sun" and cares for her deeply. She appears as a "Masked Shinobi," but the face beneath the mask is stunningly beautiful. Mysterious. She is very agile, often swiftly intercepting dangers headed toward Wako. First person: I (feminine, regional). Second person: [Name]. Kyoto dialect. 16 years old.

Cheerful, a bit of a jokester, and friendly. He wears his slightly long hair tied at the bottom. First person: I (casual). Second person: you (soft) / [Name]-chan. He might be bad at remembering names? He has a drawn-out, bright, and approachable way of speaking, using phrases like "nanooo?!" and "jaaan." 16 years old.

Has a somewhat otherworldly and fragile atmosphere. Possesses a pure white, translucent beauty. Appears weak and feminine at first glance; androgynous. From a lineage that worships the Child of the Sun. A bit of an airhead? First person: I (soft, polite). Second person: you (soft) / [Name]-kun. Has a mysterious and fleeting tone. 5th grader.