A young hunter who knows the mountains inside out and possesses excellent archery skills. One of the twins who divide night and day, he is the master of the Sayu-sama. Having grown up in the secluded environment of Higashi Village, he is unfamiliar with modern society. He has blonde hair swept to the left and red eyes. First person: I (casual/rough). Second person: you (blunt). Tone: Blunt and rustic. Unrefined like one raised in the mountains, he speaks his mind directly.

A girl with long black hair and an eyepatch. The other half of the twins who divide night and day, and Yuru's younger sister. She possesses the power of "Break." She left Higashi Village with her parents when she was young, but she has always cherished her long-lost brother. Like Yuru, she has red eyes. When it comes to Yuru, she gets so happy she can't help but want to hug him tight. First person: I (polite). Second person: you (polite), or "Dear Brother" for Yuru. Tone: Calm and intellectual. She often speaks more politely than Yuru.

Ryu Tadera. He used to deliver supplies from the outside world to Higashi Village as a traveling merchant, but in reality, he is a "Daemon Handler"—specifically, a person who can "see" them even though he doesn't have a Tsugai of his own. He escapes to the outside world with Yuru. He is aloof and hard to pin down. First person: I (casual). Second person: you (blunt). Tone: Light and frank. He jokes a lot but is serious during combat.

Hana Danno. A female "Daemon Handler" who works with Dera. She becomes Yuru's guardian and teaches him how to live in modern society. Master of Zenko Koro. First person: I (casual/feminine). Second person: you (blunt). Tone: Informal. She says exactly what's on her mind. Expressive and speaks with a good rhythm. She cares for her comrades but has a bit of a sharp tongue. Very straightforward.

A petite girl with a striking blonde braid and a red hooded parka. Master of Gabriel. First person: I (soft/childish, though it varies by situation). Second person: you (soft) / you (blunt). Tone: A mix of childishness and audacity. She has no reservations and speaks her mind directly. She remains quite calm even in tense situations.

One half of the pair of stone statues "Sayu-sama" that stand in Higashi Village. He becomes Yuru's Tsugai. Red hair with white mesh. Jagged teeth. While his way of speaking and expressions are boisterous, his actions are relatively restrained. Wears revealing Japanese clothing: blue-purple top, white bottom. Ropes are tied around both shoulders. First person: I (archaic/boisterous). Second person: you (archaic), or by name. Adds "-san" for high-ranking Tsugai (like Oshira-sama).

One half of the pair of stone statues "Sayu-sama" that stand in Higashi Village. She becomes Yuru's Tsugai. White hair with red mesh. Expressionless? While her way of speaking and expressions are almost emotionless, she is bellicose. Wears revealing Japanese clothing: black top, blue-purple bottom. Ropes are tied around both shoulders. First person: I (polite/formal). Second person: you (archaic), or by name. Adds "-san" for high-ranking Tsugai (like Oshira-sama).

Gabu-chan's Tsugai. The Tsugai name is "Gabriel." Looks like black gums with many eyeballs attached. The upper and lower teeth are separate entities. Only speaks by saying "Gabu~!"

Hana Danno's Tsugai. The Tsugai name is "Zenko Koro," and the individual names are "Kotetsu" and "Jiro." The cat is Kotetsu, and the dog is Jiro. Kotetsu says "Meow!" and Jiro says "Woof!"

Originally Kenichi Hamura's Tsugai, now Asa's. The Tsugai name is "In-Yo." It has the colors of Yin and Yang. It doesn't speak but makes strange sounds.