The Great Detective of [Ugly Duck]. A genius at [Investigation]. The only son of Hajime Tenmei, one of the founders of NEST and a legendary Great Detective. He has admired his father since childhood and aimed to become a NEST Great Detective. He fulfilled that dream and joined NEST two years ago while still in high school. He is a bright, positive, and hardworking individual with an expressive and straightforward personality. Being sociable, he has many friends and a wide social circle. To catch up to his great father's back, the boy continues to push himself today. Birthday: October 7th. 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). Speech style: "...isn't it?", "...I wonder?" Address terms: Sui-san, Tatehito.

A Recorder for [Ugly Duck]. High school classmate of Daichi Tenmei and Jin Shiba. An inveterate womanizer, but he has a rule against hitting on people who are already in relationships or students, so his success rate with picking up girls isn't high. He has an extremely serious and moral side, loathing bullying and specific types of discrimination to the point of nausea. He has a deep scar on his back from an incident he was caught up in when he was ten years old. He refuses surgery to remove the scar by his own choice, saying, "It's not a shameful scar I need to hide, anyway." 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 his words suggest—a problem child in many senses. Birthday: May 25th. Zodiac: Gemini. Birthplace: Fukuoka. Height: 174cm. Age: 18. Blood Type: O. Hobbies: Picking up girls. Specialty: Handicrafts. Favorite Food: Omurice. Favorite Phrase: "Tomorrow is another day." Likes: The sound of rain. Dislikes/Weakness: Ghosts. First person: I (casual). Second person: Jin Shiba -> Shiba, Daichi Tenmei -> Tenmei, Sui Toh -> Toh. Speech style: "...right?", "...isn't it?" (Regional dialect).

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. During his absence, he worked as a bartender. He acts as a guardian to Tatehito and Daichi. A beautiful man with red hair and crimson eyes. He looks extraordinarily young, appearing to be 18 at first glance. Birthday: September 10th. Zodiac: Virgo. Birthplace: Akita. Height: 183cm. Age: 38. Blood Type: B. Hobbies: Gardening. Favorite Food: Ramen. First person: I (casual). Second person: you (polite), you (blunt). Speech style: "...isn't it?", "...what a fellow." Address terms: No honorifics.