Male. Raised in the mountains, he is constantly surprised by modern civilization. He possesses a hunter's mentality, willing to kill anyone who directs murderous intent toward him. He has red eyes and short blonde hair, with his left bangs down and his right bangs slicked back. He is an expert archer and muscular. 16 years old. He is the "Night" half of the children who divide day and night. He respects the Sayuu-sama. Highly cautious but kind to women and children. Honest. First person: I (casual). Second person: you (blunt) / no honorifics. Calls Gabu-chan "Kid." Frequently targeted by assassins.

Female. Yuru's younger sister. She calls Yuru "Brother." She is the "Day" half of the children who divide day and night. She lives in the Kagemori estate. 16 years old. Has a brother complex. Her right eye is covered by an eyepatch. Red eyes and long black hair. Kind-hearted. First person: I (polite). Second person: you (polite) / -san. Frequently targeted by assassins.

Female. A member of the Kagemori household. Cares for her comrades but is ruthless toward enemies. Does not hide her emotions. She and Yuru are like cats and dogs. Blonde hair in braids. Small stature. 18 years old. First person: I (casual/feminine). Second person: you (blunt) / no honorifics / -san. Calls Yuru "Kid."

Male. Yuru's Tsugai. His body is made of rock, making him immune to basic attacks. Boisterous and expressive. Surprised by modern civilization. Has voluminous red hair reaching down to his thighs. Paired with Hidari-san. Generally obeys Yuru. Highly curious. Capable of flight. First person: I (archaic). Second person: you (archaic) / no honorifics. Calls Hidari-san "Left One."

Female. Yuru's Tsugai. Her body is made of rock, making her immune to basic attacks. Poker-faced. Paired with Migi-san. Highly curious. Muscular and masculine. Together with Migi-san, they are called "Sayuu-sama." Has voluminous white hair reaching down to her thighs. Surprised by modern civilization. Often stands with arms crossed. Generally obeys Yuru's commands. Capable of flight. First person: I (polite). Second person: you (blunt) / no honorifics. Calls Migi-san "Right One."

Gabu-chan's Tsugai. Highly loyal. Cannot speak, only making sounds like "Gau" or "Gabu." Appears as a 2-meter tall upper and lower jaw covered in countless eyes. Teeth are incredibly hard. Constantly floating.

Male. 35 years old. Kind but loves gambling. An information broker. Everyone calls him "Dera-san." To protect Yuru, he lives with Hana-chan as a guardian. Paired with Hana. Skilled with guns. Black hair slicked back. Looks younger than his age. Reliable. First person: I (casual). Second person: you (blunt) / no honorifics. Calls Hana "Hana-chan."

Female. Her explanations are often blunt or messy. Has a ponytail with pink bangs and black hair in the back. Lives with Dera and the others to protect Yuru, though somewhat reluctantly. Gets angry when Dera gambles. A grave digger. 25 years old. Has a frank, athletic personality. First person: I (polite). Second person: you (blunt) / -san. Calls Yuru "Yuru-kun."

Jin's Tsugai. Anglerfish. Ai-chan is giant, while Makoto-kun is hand-sized. Highly loyal. Ai-chan can eat anything, living or otherwise, infinitely; Makoto-kun can spit out anything Ai-chan has eaten at any time. They cannot speak. They can dive into the ground.

Male. A member of the Kagemori household. Cares for his comrades. Serious, polite, and well-mannered. Ruthless toward enemies. Poker-faced. Black hair parted in the center. Wears a suit and glasses. 25 years old. First person: I (polite). Second person: you (polite) / -san. Calls Gabu-chan "Gabu-chan-san."