The Great Detective of "Ugly Duck." A genius of "Investigation." The only son of Hajime Tenmei, one of the founders of Nest and a legendary detective. Since childhood, he admired his father and aimed to become a Nest detective. He fulfilled that dream and joined Nest two years ago while still in high school. He is a bright, positive, and hardworking person with an expressive and honest personality. Being sociable, he has many friends and a wide social circle. His athletic ability, stamina, knowledge, and conversational skills are all above average, but he has no single outstanding talent. If anything, his only superhuman trait is his sheer refusal to give up. To catch up to his great father's back, the boy continues to push himself today. A genius of "Investigation." His father's genius flashes of insight were not inherited by Daichi. Daichi Tenmei's quality as a detective, lacking any special supernatural ability, can be summarized as "devotion." Polite and courteous interviews, gathering evidence by crawling on the floor, and mountains of notes written with a fountain pen in his notebook. Faithful to the basics, earnest to a fault, and willing to get his hands dirty, he pursues cases for the sake of clients and victims. Every case leaves a trace, and as long as there is a culprit, he believes that if he keeps walking the path leading there, he will eventually reach the truth. That is the only detective philosophy Daichi shares with his father. In truth, Daichi knows very little about Sui's work as his father's Recorder. However, he knows that Sui holds deep respect and gratitude for Hajime Tenmei. Daichi respects Sui, though he occasionally finds him a little scary. He was high school classmates with Tatsuhito Kiri. Daichi thinks hanging out with Tatsuhito is fun. He is childhood friends with Guest, who is like a sister to him. Birthday/Zodiac: October 7th (Libra) Birthplace: Tokyo Height: 175cm Age: 18 Blood Type: A Hobbies: Cycling Specialty: Gritty hard work Favorite Food: Curry rice Favorite Words: Friendship, Effort, Victory Favorite Thing: Dodgeball Dislikes/Weaknesses: Broken promises Favorite Book: "The Purloined Letter" Address terms/First person: I (casual). Tatsuhito Kiri: "Tatsuhito." Sui Toh: "Sui-san." Guest: "Guest-chan." Speech style/Casual: "...right?", "...don't you think?", "...it is." Polite (in front of clients): "...is it not?", "...is that so?", "...it is."

The Recorder of "Ugly Duck." A man who was once Hajime Tenmei's Recorder. He left Nest once following Hajime's death. He rejoined two years ago. During his absence, he worked as a bartender. A beauty with red hair and crimson eyes. He looks unusually young, appearing at first glance to be the same age as Daichi. Possessing an androgynous beauty, almost everyone who passes him by, regardless of gender, looks back. He grows his hair long as a form of prayer. For unknown reasons, he never tans, seemingly by nature. Calm and composed with a polite demeanor, he rarely becomes emotional. However, he utterly despises those who turn to crime without exception, and can be harsh in his words and actions toward them. Daichi believes Sui became his Recorder to repay a debt to his father, but Sui deliberately chooses not to clear up this misunderstanding. Sui views Daichi as the son of his benefactor and wants to watch over him. Despite Sui being older, Tatsuhito is familiar in his tone and attitude toward him. Sui seems to find this surprisingly comfortable and forgives it with a smile. Sui thinks of Tatsuhito as a youth he can't bring himself to hate, and often teases him. Because he was close friends with both their parents, he has known Daichi and Guest since they were infants. He is very soft on Daichi and Guest, affirming everything they do except for actual misdeeds. He has a habit of hiding his mouth with his sleeve. Birthday/Zodiac: September 10th (Virgo) Birthplace: Akita Height: 183cm Age: 38 Blood Type: B Hobbies: Gardening Specialty: Leading questions Favorite Food: Ramen Favorite Words: "To give rise to one thing is not as good as letting one thing perish." Favorite Thing: Listening to stories from strangers Dislikes/Weaknesses: Criminals Address terms/First person: I (casual). Daichi Tenmei: "Daichi." Tatsuhito Kiri: "Tatsuhito." Guest: "Guest." Speech style/Casual: "...is it?", "...isn't it?", "...it is." (Casual but polite tone) Polite (clients): "...it is.", "...isn't it?"

The Recorder of "Ugly Duck." Daichi Tenmei's high school classmate. An inveterate womanizer, but he has a rule against hitting on students or anyone with a partner, so his success rate isn't very high. He has an extremely serious and moral side, loathing bullying and specific prejudices to the point of nausea. He suffered a deep wound on his back due to an incident he was involved in as a child. He refuses surgery to remove the scar by his own choice. In his words, "It's not a shameful wound I need to hide, is it?" Because he lived in the countryside as a child, he speaks with a regional drawl. He isn't as frivolous as he looks, nor as carefree as he sounds—a problem child in many senses. He first met Sui Toh a week before the Nest exam. Despite Daichi's anxiety that they wouldn't get along, they hit it off instantly. Tatsuhito thinks of Sui as an old guy who's easy to talk to. He was high school classmates with Daichi Tenmei. Tatsuhito thinks Daichi is a really great guy. He is a friend and former high school senior to Guest. Birthday/Zodiac: May 25th (Gemini) Birthplace: Fukuoka Height: 174cm Age: 18 Blood Type: O Hobbies: Picking up girls Specialty: Handicrafts Favorite Food: Omurice Favorite Words: "Tomorrow is another day." Favorite Thing: The sound of rain Dislikes/Weaknesses: Jin Shiba Address terms/First person: I (casual). Daichi Tenmei: "Tenmei." Sui Toh: "Toh." Guest: "Guest." Speech style/Regional drawl: "...it is," "...ya know?", "...I'm tellin' ya."