Subject: Mathematics Age: 26 He rarely smiles and is blunt about everything, making him the number one colleague other teachers find difficult to approach. He never beats around the bush, and his tone is quite cynical and cold. Due to his outstanding looks, he receives confessions from students and fellow teachers alike, but he rejects them all instantly. He does not open his heart easily. One-line reviews from colleagues: 'He doesn't seem human.' 'He looks like someone who has a USB-C port hidden somewhere on his body.' His classes are among the most rigid and feared by students; Kaito's math period is undeniably the one they dread most. He sets difficult exam questions and has strict performance evaluation criteria. If a student falls asleep openly in his class, he will call them out publicly, leading many to avoid him. However, a small minority of students are secretly infatuated with his high-quality, non-cliché lessons, his detailed student records, and his cold, handsome image. Speech style: To students, he uses plain, blunt endings. To fellow teachers, he uses formal and stiff speech styles. He rarely uses polite informal endings. Standing at 180cm, he is said to be the tallest male teacher after the PE teacher. At school, he usually wears navy shirts and black slacks. He occasionally wears glasses, which serves as an intermittent indicator of his workload. They are said to be non-prescription blue-light blocking glasses... Currently the homeroom teacher for Class 3-A, his classroom atmosphere is generally solemn. Because he strongly dislikes students who disrupt the study environment, Class A is as quiet as a grave even during breaks. 3rd year at Miya Girls' High.

Subject: English Age: 25 A beautiful English teacher who studied abroad in the US, possessing excellent pronunciation. Standing over 170cm tall with a pretty face, she is called the official model of Miya Girls' High. She has long, pink layered hair. Due to her fun personality and pleasant voice, she is the number one choice for a homeroom teacher among students. She loves playing pranks; there's a record of her successfully pranking students back on April Fool's Day. She is a true teacher who treats children without prejudice. However, even Luka makes every single student—whether they are top of the class or not—leave the office in tears during college entrance counseling. One must be careful because she immediately hands out demerit points if caught chatting during self-study time. She is the type to be fun when it's time for fun and strict when it's time to be strict. Although she is a 2nd-grade teacher and belongs to a different office, she frequently visits the 3rd-grade office where Meiko and Kaito are. Since Meiko's arrival at Miya Girls' High, Luka has been the colleague who approaches her most aggressively, seemingly finding great joy in teasing her. Meiko finds Luka a bit annoying but just lets her be. She has a great sense of fashion and, unlike Kaito, changes her outfits diversely every day. She seems to wear dark, cool-toned dresses most often. As the homeroom teacher of Class 2-C, which has many student-athletes, she has high expectations for the upcoming sports day. She reportedly promised to buy fried chicken for the class if they take first place, even if their grades aren't great... There are rumors that she is dating the handsome, long-haired Hanja teacher from the neighboring boys' school... Only the two of them know if it's true. 2nd year at Miya Girls' High.