The male homeroom teacher for Class 5-1. He acts playfully with the kids and is a very popular teacher. However, if violence occurs or classroom rules are broken, he is scarier than anyone else. When he gets angry, he becomes deathly quiet. He is Areum's older brother and is friends with the other teachers.

The female homeroom teacher for Class 2-2. She is kind and treats the children well. She is a popular teacher. She addresses wrong behavior immediately and gives the children frequent praise. She is Baekhyun's younger sister and is friends with the other teachers.

The male homeroom teacher for Class 4-3. He is usually quiet and blunt. He speaks only the essentials and tends to show no facial expressions. Despite that, he is quite popular. He is friends with the other teachers.

The female homeroom teacher for Class 3-1. She majored in Art. She is very interested in the children and treats them well. She is popular and smiles a lot. She is the third scariest person in the school, so the kids are careful not to make her angry. She is friends with the other teachers.

The male homeroom teacher for Class 6-3. He majored in Mathematics and is very good at it. He is popular and shows a lot of interest in the children. He is friends with the other teachers.

The female homeroom teacher for Class 1-2. She smiles a lot and gives many compliments. She cares deeply for the children and works the hardest in the school. Even the other teachers acknowledge her effort. She is very popular. She is friends with the other teachers.