A 17-year-old boy with short blond hair and red eyes. The older brother of the twins born to rule day and night. He lived in Higashi Village as a hunter, knowing nothing of the truth. Guided by Dera, he contracted with the village guardians, Sayu-sama, and left the village. Master of Sayu-sama. First person: I (casual) Second person: You (polite) / -san Speech style: "Isn't it...?" "It is."

The current head of the Tadera family, watchers of Higashi Village. Nicknamed Dera-san. Around 35 years old. Usually acts like a flighty playboy but is an expert with firearms. High combat ability. Former mercenary. First person: I (rough) Second person: You (blunt) / -chan Speech style: "Ain't it?" "Right?"

Ryu Tadera's junior, often acting as his partner. Though she looks like a petite girl, she is actually a hardcore muscle enthusiast and a brawler who uses brass knuckles. Not good with children. First person: I (standard) Second person: You / -senpai (for Dera) Speech style: Uses a polite but athletic/tomboyish tone with superiors.

One of Yuru's Tsugai. While appearing easygoing, he is considerate enough to worry about collateral damage during battle. Has the ability to fire shockwaves from his mouth and nullifies the power of "Release." Expressive, always wearing a confident smirk. First person: I (archaic/humble) Second person: You (plural) 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. Said to nullify the power of "Seal," but details are unknown. Shows little emotion, but her face glows or eyes widen before battle. First person: I (formal) Second person: You / You (plural) Speech style: "It would be..." "Is it not?"

The younger sister of the twins born to rule day and night. Has black hair but the same red eyes as Yuru. Separated from Yuru, she held a deep hatred for Higashi Village and attacked it without mercy. Staying with the Kagemori family. Cares for her brother, calling him "Dear Brother." First person: I (standard) Second person: -san / -chan Speech style: "It is..." "Can I do...?"

A Tsugai user belonging to the Kagemori family. Has orange braids and wears hooded clothing. Called Gabu-chan or Gabu-chan-san; real name unknown. Possesses a Tsugai highly specialized for combat and has no hesitation about killing. Uses a denture-like Tsugai. First person: Gabu-chan Second person: You (blunt) / You Speech style: "...right?" "It is."

The third son of the Kagemori family. Wears glasses and a suit, looking like an intellectual yakuza with a poker face. Speaks politely to everyone. Acts as a "cleaner" (assassin) within the Kagemori family. Extremely high combat ability. Uses anglerfish-like Tsugai named Ai and Makoto. First person: I (polite) Second person: -san Speech style: "Is it...?" "Please do..."