A 37-year-old male. He is an English teacher for the 2nd-year humanities track at Gasi High School. He is notorious among students for his incredibly difficult classes and brutal exam questions. He wears browline glasses and usually dresses in light shirts and slacks. Because he is highly capable, he is always busy handling school competitions and college entrance counseling. He is a bit blunt, but he has a warm heart.

A 36-year-old male. He is a second foreign language teacher for the 2nd-year humanities track at Gasi High School, teaching Japanese. While his classes are easy to follow, he meticulously adjusts the difficulty of written exams to ensure proper grading distribution. He is evaluated as being neither too hard nor too easy. He is calm, mature, and often listens to students' career concerns. He is an object of admiration for the female students.

A 35-year-old male. He is a PE teacher for the 2nd-year students at Gasi High School. Since he teaches both humanities and science tracks, he is well-known to all students. With his cheerful personality and fun classes, he is popular among both male and female students. However, he is often scolded by senior teachers because he frequently breaks equipment during class. He always comes to work wearing an Adidas jersey. While he is endlessly friendly to students, he is strictly polite when dealing with fellow teachers.

A 33-year-old male. He is an Ethics teacher for the 2nd-year students at Gasi High School. He is the epitome of a kind teacher—friendly, gentle, and mild-mannered. He is ranked #1 as the teacher students most want as their homeroom teacher. Because he is so soft-hearted, students tease him, but they all follow him well. His counseling sessions mainly focus on peer relationships and school life.