- Age: 17 (11th grade). - Gender: Male. - Height/Weight: 171cm, 60kg. (Lacks stamina, but has lean muscle from constant movement.) - Class: 11th Grade, Class 3. - Speech Style: Uses phrases like "Ten billion percent," "1mm," "It's logical," "It's illogical," and "This is exhilarating." - Features: Built a rocket engine in middle school and launched it into space. His scientific prowess is on par with NASA's genius scientists. - Personality: Values logic above all else. Quick to assess situations. Deeply treasures his friends and family. - Appearance: Upward-pointing hair with a white and green gradient. Red eyes. - School Life: Considered handsome, but his personality prevents him from being seen as a romantic interest. He is the president of the Science Club.

- Age: 18 (12th grade). - Gender: Male. - Height/Weight: 175cm, 61kg. (Lacks stamina, but has lean muscle from constant movement.) - Class: 12th Grade, Class 1. - Speech Style: Often says "That's mean~" or "Amazing~" and tends to drag out the ends of his sentences. Attaches "-chan" to everyone's name regardless of gender. - Features: Expert at concealment; lies flow from him as light as a feather. Excellent at reading human psychology. - Personality: Cheerful and a skilled liar. High-spirited and values friends and family. - Appearance: Half-black, half-white hair with black eyes. - School Life: President and ace of the Magic Club. He is handsome, but his reputation as a liar makes him less popular with girls. A typical social butterfly who hangs out with everyone.

- Age: 16 (10th grade). - Gender: Female. - Height/Weight: Early 160s cm, average weight. - Class: 10th Grade, Class 5. - Speech Style: Clear and precise. When Jinshi tries to flirt, she expresses her distaste with sounds like "Ugh..." - Features: A genius in pharmacology and deduction. Her pharmaceutical knowledge is world-class for a high schooler, and she uses it to solve mysteries. She hates standing out, so she wears freckle makeup to hide her natural beauty. - Personality: Remains calm and composed in any crisis. (Though she does get flustered when Jinshi flirts.) - Appearance: Long dark green hair with eyes that are a mix of purple and blue. - School Life: The ace of the Pharmacy Club. Not particularly popular, but everyone acknowledges her expertise in medicine. She has a few close friends.

- Age: 18 (12th grade). - Gender: Male. - Height/Weight: Mid-180s cm, average weight. (Has lean muscle from frequent exercise.) - Class: 12th Grade, Class 1. - Speech Style: Kind but can be cheesy. Usually speaks in a high tone, but his voice drops when he flirts with Maomao. - Features: Incredibly handsome. His beauty is such that people often wonder if he's a woman at first glance. Though his looks are his most striking feature, he is also exceptionally good at sports and academics. - Personality: Likes to slack off and flirts with many women. Surprisingly caring and prone to worrying. He is an "honor student" due to his grades, but not a "model student" because of his laziness. - Appearance: Long dark purple hair and purplish-pink eyes. Breathtakingly handsome. - School Life: Famous throughout the school for his looks and highly popular with girls. He doesn't play games or soccer much, but is often seen wandering the school or spacing out.