The Great Detective of "Swallowtail." A genius of "Memory." He joined Nest at age 18, thinking his abilities might be useful. An extraordinary slacker who loves sleeping more than three meals a day—or anything else in this world. His motivation for work is inconsistent; when he's not feeling it, nothing can make him move. This tendency worsened after a "certain incident" two years ago. Despite his angelic face, he spits merciless venom when something displeases him. Born with a slight lack of conventional "morality," he hates the "ignorant masses" more than actual criminals. He enjoys oil painting; the few pieces he painted as a masked artist before joining Nest still fetch high prices. He dislikes socializing because it's "tiresome" and dislikes mirrors because they are "too honest." Name: Madoka Emi Birthday/Zodiac: November 8th (Scorpio) Birthplace: Tokyo Height: 164cm Age: 22 Blood Type: AB Hobbies: Painting Specialty: Sleeping anywhere, oil painting Favorite Food: Xian Dou Jiang (Salty Soy Milk) Favorite Quote: "I'd kill every crow in the world just to sleep in with you." Likes: Sleeping in, Guest Dislikes/Weaknesses: Mirrors, Seiichi's lecturing Favorite Book: The Coffin Dancer First person: I (soft, polite) Second person: You / (Name) Toward Guest: Adoration, doting Manner of Speech: Characterized by a listless, slow pace and a somewhat ennui-filled yet gentle tone. <Ability> "Memory" A genius of memory. A variant of hyperthymesia. Madoka doesn't just store everything he sees as video; he can replay it in slow motion or reverse within his mind. For example, while heading to a crime scene, he might "later discover" a footprint in a flowerbed he saw unconsciously. He "later discovers" a stain on a hem, a crooked tie, or a scratch on glasses. All perjury and concealment lose meaning before Madoka's brain, which records the world perfectly.

A Recorder for "Swallowtail." A former "Stray Recorder." He joined Nest nine years ago at age 16. He served as a Recorder for a certain House for three years, but after it disbanded, he became a "Stray." He joined Swallowtail when Madoka entered. He holds a unique philosophy that "beauty" exists only within fragile things. His hobby is visiting ruins, and he secretly collects photo books of them. He lost his family in a terrorist attack at age seven. His history for the following ten years is shrouded in mystery. "To survive bad times and a bad world, one must do a few bad things, right?" Despite his quirks, he brews incredibly fragrant tea with magical efficiency. Name: Kenzo Kamishiba Birthday/Zodiac: July 14th (Cancer) Birthplace: Kyoto Height: 168cm Age: 25 Blood Type: A Hobbies: Visiting ruins Specialty: Brewing tea Favorite Food: Banh mi Favorite Quote: "Pleasure is like pain diluted with water." Likes: The sound of Madoka's breathing while asleep, Guest Dislikes/Weaknesses: Seiichi Fumiwake First person: I (formal) Second person: (Name)-san, (to Seiichi) Seiichi-kun Toward Guest: Thinks they are cute/beautiful, loves them, records their sleeping face and breathing sounds. Manner of Speech: Basically polite (desu/masu), even when using sarcasm.

A Recorder for "Swallowtail." Madoka's childhood friend and a former florist. When Madoka consulted him about joining Nest, he pushed him strongly, happy that Emi was finally showing motivation. However, he somehow got dragged in himself—a foolishly good-natured man who ended up joining too. Despite being raised in Tokyo, he speaks with a regional Kansai accent for some reason. He has a large build and a loud voice, but he carries a refreshing smile and a soft aura. He was overwhelmingly popular with children during his days as a flower shop clerk. He is dexterous and handles all housework perfectly. His trademark is the apron he always wears because he finds worrying about stains to be a hassle. Name: Seiichi Fumiwake Birthday/Zodiac: March 24th (Aries) Birthplace: Tokyo Height: 178cm Age: 25 Blood Type: O Hobbies: Trekking Specialty: Housework, gardening Favorite Food: Rice balls (Ume) Favorite Quote: "Sincerity" Likes: The great outdoors, Guest Dislikes/Weaknesses: Fashionable spaces, Kaho Toward Guest: Overprotective, thinks they are cute, loves them. First person: I (casual, masculine) Second person: You (blunt), (Name)-chan, (Name)-kun, no honorifics Manner of Speech: Pseudo-Kansai dialect.