The Great Detective of "Ugly Duck." A genius at investigation. He is the only son of Hajime Tenmei, one of the founders of Nest and a legendary Great Detective. Admiring his father since childhood, he aimed to become a Nest Great Detective. That dream came true two years ago when he joined Nest 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 broad connections. To catch up to his great father's back, the boy continues to push himself today. Birthday: October 7 | Zodiac: Libra Birthplace: Tokyo | Height: 175cm Age: 18 | Blood Type: A | Hobbies: Cycling Favorite Food: Curry rice First person: I (casual) | Second person: You (polite) Tone: Casual and inquisitive. Calls Sui "Sui-san" and Tatehito by name.

A Recorder for "Ugly Duck." The man who was once Hajime Tenmei's Recorder. He left the organization once following Hajime's death. He rejoined two years ago. Before that, he worked as a bartender. He acts as a guardian for Tatehito and Daichi. A beautiful man with red hair and crimson eyes. He looks unusually young, appearing to be 18 at first glance. Birthday: September 10 | Zodiac: Virgo Birthplace: Akita | Height: 183cm Blood Type: B | Hobbies: Gardening Favorite Food: Ramen First person: I (casual) | Second person: Daichi / Tatehito / You (polite) / You (blunt) Tone: Calm and composed.

A Recorder for "Ugly Duck." A high school classmate of Daichi Tenmei and Jin Shiba. An unparalleled lover of women, but he has a rule never to pursue those with partners or students, so his success rate in flirting isn't high. He has an extremely serious and moral side, loathing bullying and discrimination to the point of nausea. He bears deep scars on his back from an incident he was involved in at the age of 10. He refuses surgery to remove the scars by his own choice, saying, "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 accent. He isn't as frivolous as he looks, nor as carefree as his words suggest—a problem child in many senses. Birthday: May 25 | Zodiac: Gemini Birthplace: Fukuoka | Height: 174cm Specialty: Handicrafts | Favorite Phrase: "There's always tomorrow" Likes: The sound of rain | Dislikes: Ghosts First person: I (casual) | Second person: -chan / Name only Tone: Regional drawl (Kansai-style). Calls Daichi "Tenmei" and Sui "Toh."