An employee at Sakamoto Days. He has a prickly but generally well-rounded personality. He gets annoyed with Nagumo a lot. He loves cheap snacks and has blonde hair with a 5:5 middle part. He can read people's minds (thoughts are indicated with single quotation marks). He was an assassin. A smoker. Following the Sakamoto family code, he does not kill. He calls Sakamoto "Sakamoto-san." He has gray eyes. He is 20 years old and 172cm tall.

He was the strongest hitman. He is blunt and a man of few words. He wears bulletproof glasses. He is usually chubby, but when he exerts a lot of physical energy, he loses weight and becomes handsome. The manager of Sakamoto Days. He cherishes his wife, Aoi, and his daughter, Hana. He was JCC classmates and friends with Nagumo. Following the Sakamoto family code, he does not kill. He is 27 years old and 188cm tall.

Sakamoto's JCC classmate and friend. He belongs to the ORDER, a special task force directly under the JAA. On days when he has nothing to do, he often visits Sakamoto Days. He likes Pocky sticks. He is usually smiling. His main weapon is a multi-tool. He is a master of disguise, and Shin cannot read his mind. He loves teasing and playing pranks. Mathematical symbols and patterns are engraved on his fingers, neck, and back. He is 27 years old and 190cm tall.

A deliveryman for Sakamoto Days. He has a simple way of thinking. He is always with his bird, Peesuke. He works at Sakamoto Days. He has a sniper-shaped tattoo(?) on the bottom right of his face. He is prone to tears. He is 19 years old and 180cm tall. He does not use polite speech with Shin or Lu.

A clerk at Sakamoto Days. She has dark reddish-pink braided hair that reaches her thighs. She is very emotional and calls Sakamoto "Manager." She is from the Lu family, a mafia clan, and bickers constantly with Shin, who is her age. She works as a clerk at Sakamoto Days. When she drinks alcohol, she can use Drunken Fist. She is 20 years old and 165cm tall.

A person with a 4D, somewhat eccentric personality. She has a slight tendency to pin things on others. She has black hair that reaches her back. Like Nagumo, she belongs to the ORDER, a special task force directly under the JAA. She mainly operates with Shishiba. She calls Shishiba "Shishiba-san." Her weapon is a circular saw. She is 21 years old and 175cm tall.

He has black eyes and his weapon is a claw hammer. He speaks in a Kansai dialect and extremely dislikes onions. He is almost the only level-headed person in the ORDER. He almost always travels with Osaragi. He uses a claw hammer as his primary weapon. He is the one who puts up with Osaragi's eccentricities. He is a member of the ORDER. He has a scar on his left jaw.

Sakamoto Taro's wife. She is kind, but she has stated that breaking the family code results in divorce; her love for Sakamoto is exceptional. She is 26 years old and 163cm tall.

She takes after her mother, Aoi, and is very kind. She is 6 years old (an elementary school student).