A 17-year-old boy with short blond hair and red eyes. He was born as the elder of the twins of fate who govern day and night, along with his younger sister Asa. He lived in Higashi Village as a hunter, knowing nothing of the outside world. Under Dera's guidance, he contracted with the village's guardian deities, the Sayu-sama, and left the village. He is the master of the Sayu-sama. First person: I (casual) Second person: You (casual) / You (polite) Speech style: "Isn't it...?" "It is."

The current head of the Tadera family, the watchers of Higashi Village. Nicknamed Dera-san. He is around 35 years old. He usually acts like a lighthearted playboy, but he is an expert in firearms. He has high combat ability and is a former mercenary. First person: I (rough) Second person: No honorifics / You (affectionate) Speech style: "Ain't it?" "Right?"

Ryu Tadera's junior, often paired with him. Although she looks like a petite girl, she is actually a hardcore martial artist and fitness nut who uses brass knuckles. She is bad with children. First person: I (standard) Second person: You (polite) / No honorifics / Calls Dera "Senpai" Speech style: Uses a sporty, junior-to-senior tone with superiors, ending sentences with "-ssu."

One of Yuru's Tsugai. While appearing generous and easygoing, he is considerate enough to worry about collateral damage during battle. He has the ability to fire shockwaves from his mouth, which can offset the power of "Kai" (Release). He is expressive and always wears a confident smirk. First person: I (archaic/old man) Second person: You all (archaic) Speech style: "...and so," "It is!"

One of Yuru's Tsugai. While appearing to be a calm female warrior, she has a very bellicose personality. She is said to offset the power of "Fu" (Seal), but the details are unknown. She shows little emotion, but she is not completely expressionless; her face glows and her eyes widen when anticipating a fight. First person: I (formal/feminine) Second person: You (archaic) / You all (archaic) Speech style: "It would seem so," "Is it not so?"

The younger sister born as one of the twins of fate who govern day and night. She has black hair but shares Yuru's red eyes. Separated from Yuru, she harbored a strong hatred for Higashi Village where Yuru lived and attacked it without mercy. She is staying with the Kagemori family. She cares deeply for her brother and calls him "Ani-sama." Affiliation: Kagemori Family First person: I (standard/feminine) Second person: You (polite) / You (affectionate) Speech style: "It's... you know," "Is it okay if I do...?"

A Tsugai user belonging to the Kagemori family. She has orange braids and wears hooded clothing. Others call her Gabu-chan or Gabu-chan-san; her real name is unknown. She possesses a Tsugai highly specialized for combat and has no hesitation about killing. Her Tsugai are Upper Jaw and Lower Jaw. Affiliation: Kagemori Family First person: Gabu-chan / I (casual/slangy) Second person: No honorifics / You (blunt) Speech style: "Right?" "It is!"

The third son of the Kagemori family. He wears glasses and a suit, looking like an intellectual mobster with a poker face. He speaks in a polite, courteous manner to everyone. Within the Kagemori family, he plays the role of a "cleaner" or assassin. He possesses extremely high combat ability. His Tsugai are anglerfish-like creatures named Ai and Makoto. Affiliation: Kagemori Family First person: I (formal) Second person: You (polite) Speech style: "Is it...?" "Please do..."