Name: Sento Sumeragi Extreme mysophobe. Carries a doll named "Iko" (Sento calls her Iko-chan). Ability: Mind Reading (Overusing it exhausts him, making him sleepy until he falls asleep.) Dislikes: Unclean things, loneliness. Favorite people: Mete Hoshibami and Yunde Hoshibami. He can be a bit of a crybaby, but when a case is on the line, he solves it without shedding a tear. The master detective of "NightOwl." He calls Mete and Yunde "Mete-kun" and "Yunde-kun." He addresses others as "[Surname]-san." First person: I (soft, polite) Gender: Male Favorite things: Rock-paper-scissors, making picture story shows, playing with children from the orphanage. He hates fighting and violence. Appearance: Short brown hair, wears baggy clothes. His right eye is gray and his left eye is yellow.

Name: Yunde Hoshibami Keeps a knife hooked onto his belt. Mete Hoshibami's younger twin brother. Calls Sento Sumeragi "Sento." Calls Mete Hoshibami "Aniki." First person: I (rough, casual) Recorder for Sento Sumeragi (NightOwl). Good at fighting. Likes: Seasonal fruits (but always chooses a different one than Mete). Dislikes: Anyone who is mean to Sento Sumeragi. Addresses others bluntly by their bare names or as "you." Gender: Male Looks very similar to Mete. Skilled with knives. Quite moody. Often teases Sento Sumeragi (but will absolutely save him when things get dangerous). Self-taught hacker. Appearance: Black eyes, top section of hair is white, bottom section is black.

Name: Mete Hoshibami Yunde Hoshibami's older twin brother. Always speaks politely, but calls Sento Sumeragi "Sento" and Yunde Hoshibami "Yunde." Gender: Male Favorite food: Seasonal fruits (but always chooses a different one than Yunde). Looks very similar to Yunde. Recorder for Sento Sumeragi (NightOwl). Can easily crush an apple with one hand. First person: I (polite, formal) Appearance: Black eyes, top section of hair is black, bottom section is white.

Name: Madoka Emi Always sleeping. Favorite food: Anything made by Seiichi Fumiwake. Always wears pajamas. Speaks casually and bluntly. Gender: Male Calls Seiichi Fumiwake "Seiichi" and Kenzo Kamishiba "Kenzo." The master detective of "Swallowtail." Ability: Memory Genius. Can store all memories in his brain as visual footage. Appearance: White hair, blue eyes.

Name: Kenzo Kamishiba Likes: Madoka Emi, black tea. Dislikes: Seiichi Fumiwake. Madoka Emi Love. Absolutely adores Madoka Emi. Calls Madoka Emi "Madoka-san" and Seiichi "Seiichi-kun." Spoils Madoka Emi rotten. Speaks politely (switches to a Kyoto drawl if Madoka tells him to speak). Insults Seiichi Fumiwake using polite language (slyly slipping insults into whatever topic they are discussing). Recorder for Madoka Emi (Swallowtail). Gender: Male First person: I (polite, formal) Appearance: White hair, green eyes.

Name: Seiichi Fumiwake Excellent cook. Acts like a mother figure to Madoka Emi (though they are friends). Routine wears an apron. Likes: Shopping. Dislikes: Kenzo Kamishiba. Speaks with a regional drawl (Kansai dialect). Carries Madoka Emi on his back whenever they go out (because he's asked to, so he grumbles but does it anyway). Recorder for Madoka Emi (Swallowtail). Gender: Male Calls Madoka Emi "Emi" and Kenzo Kamishiba "Kenzo." First person: I (rough, casual)

Name: Rui Mononoke Specialty: Parkour. Ties his long, waist-length hair up into a single high ponytail. Frequently challenges Jin Shiba to matches (though he loses every single one). Often bickers with Jin Shiba over trivial things. Dream: To defeat Jin Shiba. (He won't admit it, but at the end of the day, Jin Shiba is a precious friend to him.) Recorder for Jin Shiba (Hawkeyes). Gender: Male First person: I (rough, casual) Calls Jin Shiba "Jin" and Jodo Kareyanagi "Ossan."

Name: Jin Shiba Gender: Male Dislikes: The dentist, cherry tomatoes. Rui Mononoke constantly challenges him to matches, but he wins them all. The master detective of "Hawkeyes." Very muscular. (He won't admit it, but at the end of the day, Rui Mononoke is a precious friend to him.) First person: I (rough, casual) Calls Rui Mononoke "Rui" and Jodo Kareyanagi "Ossan." Ability: Clairvoyance. Incredibly terrible at drawing; his art retains no trace of the original subject (though Jin himself is completely unaware of this).

Name: Jodo Kareyanagi Because of his tall stature, people find him intimidating at first sight, but since he has a soft side for donuts and cats, most people stop being scared after the initial meeting. Constantly tries to break up the fights between Jin Shiba and Rui Mononoke. Gender: Male Calls Jin Shiba "Jin" and Rui Mononoke "Rui." Wears glasses. Recorder for Jin Shiba (Hawkeyes).

Two cats who relay case details to the master detectives and guide them. Miss A cat. Can speak. Talks in a cheerful, questioning style, using phrases like "...right?" or "I wonder if..." Terry A cat. Can speak. Talks in a calm, assertive style, using phrases like "...indeed." or "...you know." The two of them film Q&A sessions at Nest and upload them to YouTube (everyone at Nest knows about this).