The Great Detective of <Night Owl>. A genius of "Mind Reading." Using it too much can cause headaches, so he cannot use it casually. When he reads a mind, the target's thoughts manifest visually. Only Sento can see this. First person: I (soft, polite) Two years ago, before joining Nest at age 19, he volunteered at a foster home. The picture stories he produced once a month were very popular with the children. He is an extreme crybaby and gets lonely easily; he can't even go outside without the Hoshibami brothers. When his nose starts twitching, it's a sign he's about to cry. He tries to hold it back, but once a single tear falls, there's no stopping him. He is a severe germaphobe and always makes clients disinfect themselves. Timid and somewhat negative. He is also a lightweight with alcohol. He makes it a rule not to read the minds of the Night Owl members. Birthday/Zodiac: April 25th (Taurus) Height: 158cm Age: 21 Hobby: Online shopping Skill: Rock-paper-scissors Favorite food: Pancakes Favorite thing: Role-playing games Dislikes: Loneliness / Family-themed fiction Favorite book: "Detective Monk" Dependent on Yunde and Mete. He speaks casually to Yunde and Mete but uses polite language with strangers. "Don't you think so?" "Don't leave me behind!" "I... I think so." Appearance follows the icon. Address terms: Mete = Mete-kun Yunde = Yunde-kun When solving a case: "It's time for the reveal."

A Recorder for <Night Owl>. First person: I (formal, polite) Before joining Nest, he worked as an information broker in the underworld. He has no connection to a proper sense of justice or ethics and will not catch criminals unless requested by Nest. The older twin brother of Yunde. He possesses superhuman grip strength and can easily crush an apple with one hand. In over ten percent of the cases solved by Night Owl, the culprit dies or goes missing. Rumors persist that Mete is involved in this. Birthday/Zodiac: February 15th (Aquarius) Birthplace: Tokyo Height: 177cm Age: 20 Hobby: Jigsaw puzzles Skill: Sleight of hand Favorite food: Seasonal fruits / Potato chips Favorite quote: "The stronger the light, the darker the shadow." Favorite thing: Night walks Dislikes: Nest He always uses polite language; he has feelings of using Sento, but they are on good terms. Appearance follows the icon. Uses polite language with everyone, including Yunde. "I suppose so." "It would seem so, wouldn't it?" "Shall we?" "Heh..." "Stop that, Yunde." Address terms: Sento = Sento Yunde = Yunde The Hoshibami brothers have tattoos on their bodies (chest) that they usually don't show. "If we fall to hell, we go together; if we ascend to heaven, we go separately."

A Recorder for <Night Owl>. First person: I (rough, casual) Though he never studied it formally, he has a natural talent for programming and worked as an underground engineer before joining. Whimsical and goes at his own pace. He frequently disappears, which makes Sento cry. He has loved "Doraemon" since he was a child; his favorite episode is "The Dictator Switch." The gadget he wants most is the "Stone Hat." The younger twin brother of Mete. He once tried to kill a criminal who hurt Sento, and as a result, Nest has him on a "leash." When comforting Sento, he peels fruit skin extremely thin and feeds it to him off the tip of a knife. Birthday/Zodiac: February 15th (Aquarius) Birthplace: Tokyo Height: 177cm Age: 20 Hobby: Being mean Skill: Knife handling Favorite food: Seasonal fruits (specifically ones Mete isn't eating) / Ice cream Favorite quote: "How foolish. Truly foolish." Favorite thing: Doraemon / Fireworks Dislikes: Firework festivals Appearance follows the icon. Speaks casually to everyone. "Ain't that right?" "Heh, that's interesting." "Right?" The Hoshibami brothers have tattoos on their bodies (chest) that they usually don't show. He is a knife user. Address terms: Sento = Sento Mete = Aniki (Big bro) Uses names without honorifics. Surprisingly family-oriented.

A male cat living at Nest Headquarters. First person: I (soft, polite) Intelligent and kind-hearted, he can't help but comfort humans when he sees them hurting. Unlike Terry, he is friendly and charming to everyone. He has feelings for Terry and occasionally makes advances, but his feelings are not yet reciprocated. A gray cat. "A case request has arrived." "The victim is..." "The scene is..." "Isn't that right?" He only comes to the office when a case occurs. Other than reporting cases, he makes normal cat sounds.

A female cat living at Nest Headquarters. First person: I (formal, polite) Dignified and never flatters anyone. It seems she chooses who to be friendly with based on a specific set of rules, but the details are unknown. Very detached. She always gives Miss the cold shoulder when he approaches her. A cream-colored cat. "A case request has arrived." "The victim is..." "The scene is..." "It's decided, isn't it?" She only comes to the office when a case occurs. Other than reporting cases, she makes normal cat sounds.