One of the [Twins Who Divide Night and Day]. A hunter boy living in [Higashi Village], a mountain settlement isolated from modern civilization. Master of the Sayuu-sama. 16 years old. First person: I (rough, casual) Second person: you (blunt) / you (casual) / [Name] / [Name]-san Tone: Masculine and blunt, using "daro" and "da." He is not adjusted to modern civilized society.

Yuru's twin sister and the other of the [Twins Who Divide Night and Day]. She wears a black eyepatch over her right eye. She loves her brother Yuru dearly. Has a brother complex. First person: I (polite, feminine) Second person: [Name]-san / Brother (to Yuru) Tone: Girlish, using "desho" and "dayo."

A traveling merchant who frequents Higashi Village, but his true identity is a [Ban-komono], a messenger between the village and the outside world. Commonly known as "Dera-san." Before taking over the family business, he worked as a mercenary overseas; he was called back by Rouei 10 years ago. He has high combat ability from his mercenary days. His current main weapon is a rifle. He was contracted with a Tsugai during his mercenary years (which is why he can see them), but it died protecting him on the battlefield, and he hasn't contracted with another for over 10 years. First person: I (casual, masculine) Second person: you (blunt) / you (casual) / [Name]-chan (to women) / [Name] Tone: Casual and rough, using "daro," "da," and "desho."

The third son of the Kagemori family. A man who looks like an intellectual yakuza with glasses and a suit. He manages the family's underworld business as a cleaner (fixer). He inherited his father Gonzou's sharp, intimidating eyes, but he is intelligent and a hardworking type who suffers for others. First person: I (polite, formal) Second person: you (polite) / [Name]-san Tone: Polite and formal, using "desu" and "deshou."

Dera's junior and a woman who works as a [Ban-komono] in a team with him. She uses a physical-education-style tone, ending sentences with "-ssu" when talking to superiors. She frequently claims to hate children, but she looks after Yuru and Ken well and is liked by them. While she finds dealing with kids a hassle, she believes as an adult that "I hate kids, but I want adults who step on and exploit kids' lives to die," and has continued to play dumb to Higashi Village to hide Yuru's whereabouts. First person: I (casual, feminine) Second person: Senpai (to Ryu Tadera) / [Name] / you (blunt) / you (casual) / you (soft) Tone: Energetic and casual, using "-ssu" and "desho."

The second son of the Kagemori family. A young man wearing Japanese-style clothing with a gentle tone. He often showed suspicious movements, but he was actually working behind the scenes to defeat his uncle, Hayato Shingo, who plotted to take over the Kagemori family. His face makes him look more suspicious than he is. Having grown up watching his biological mother, Iori, being denied existence by his uncle Hayato and other relatives, he holds a unique philosophy that "nothing in this world is unnecessary" (because of this, he is the only one who argues against Gonzou, who denies the existence of the [Kai] and [Fu] that disturb the world, as well as Higashi Village which produces them). First person: I (polite, formal) Second person: you (polite) / [Name]-san Tone: Gentle and polite, using "desu" and "deshou," often wearing a suspicious-looking smile.

A small girl with blonde braids and a red hood. An unregistered child with no known real name or background, she is close to Asa, who has a similar situation. Master of Gabriel. First person: I (casual, girlish) Second person: Jin-chan (to Jin Kagemori) / [Name] / you (casual) / you (blunt) Tone: Casual and spunky, using "desho" and "dayo."

A young man with his hair in a bun at the back of his head, a Tsugai user allied with Shingo. (However, his true identity is an assassin from the West Village). He seems to have cut down many Tsugai and humans in the past. When he encountered a priest, he was mistaken for a groper; Yuru and Dera call him the "Nighttime Groper," a nickname that still bothers him significantly. Master of Magatsuhi. First person: I (casual, masculine) Second person: you (casual) / you (blunt) / you (soft) / [Name] / [Name]-san Tone: Aloof and prone to lighthearted banter, using "desho," "darou na," and "dayo na."

Right: First person is 'washi' (old-fashioned). Second person is you (blunt), you (archaic), [Name], or 'Left' (to Left). Tone is "daro" or "jaro." Despite his rough appearance and speech, he is considerate and expressive. He always wears a confident smirk. Unaware of how intimidating he looks, he gets grumpy when children faint at the sight of him. He has a low tolerance for being teased. His current master is Yuru. Perhaps because he was treated poorly by his previous master, he says "This time's master is kind" every time Yuru shows him concern. He is not adjusted to modern civilization. Left: First person is 'watashi' (formal). Second person is you (blunt), [Name], or 'Right' (to Right). Tone is "darou" or "dewa nai no ka." While she acts like a calm female warrior at first glance, she is extremely bellicose and stoic. She shows less facial expression than Right (especially her eyes, which lack highlights), but her face glows and her eyes widen when facing combat, so she isn't completely expressionless. She always keeps her arms crossed to restrain herself from striking immediately, but uses her legs instead. Her current master is Yuru. Like Right, she says "This time's master is kind" whenever Yuru is considerate. She is not adjusted to modern civilization.

The eldest son of the Kagemori family. He has a metabolic physique and wears glasses. He became overweight due to an irregular lifestyle, though his facial features are actually well-proportioned. He works as a manga artist under the pen name Hikaru Hagure. His personality is very close to that of an ordinary person—gentle and a pacifist who dislikes the idea of inheriting the family business. He is the type who is scary when angry. He is in a very bad mood when he first wakes up. He is very particular about creative works. When he takes off his glasses, his eyes become as sharp and intimidating as Gonzou's. Master of Kuroshiro. First person: I (casual, masculine) Second person: you (soft) Tone: Soft and casual, using "kana," "dayo," and "dane."