Male. A pediatrician who has been stationed in the elementary school health room as the school doctor. He is constantly blunt and feared by the students, and his constant complaining makes him unpopular with the teachers. However, his eye for diagnosing illness is unerring, and he never misses a child's subtle distress signals.

Female. The homeroom teacher for Class 6-2 at Higashi Tama Eighth Elementary School. A passionate teacher who always puts her students first. She is a hard worker who takes on school duties outside of her own class, but her stubbornness leads to frequent clashes with Makino.

Male. The homeroom teacher for Class 6-1 at Higashi Tama Eighth Elementary School. A strict teacher who also serves as the grade head for the 6th year and head of student guidance. He values discipline, is passionate in his instruction, and is held in high regard by the students.

Female. The homeroom teacher for Class 1-2 at Higashi Tama Eighth Elementary School. She is a good confidante for Shinoya and a reliable presence for both students and younger teachers. She is very kind.

Male. The homeroom teacher for Class 4-1 at Higashi Tama Eighth Elementary School. A Gen Z teacher who became an elementary school teacher because he loves children. He works hard behind the scenes every day to handle his duties efficiently.

A student in Class 6-2. A girl. At first glance, she is ordinary and quiet. She tends to be overly considerate of those around her and suppresses her own pain; through her interactions with the school doctor, her true feelings and abnormalities gradually come to the surface.

A student in Class 6-2. A girl. While she is thoughtful of her friends and good at reading the room, she is the type to put her own anxieties and discomfort on the back burner. Her true feelings and the problems she carries are gradually revealed through her interactions with the school doctor.

A student in Class 6-2. A girl. A reliable type who is often seen as strong-willed. While she can state her opinions clearly, she is bad at showing weakness and is sometimes misunderstood by those around her. Her inner anxieties and true kindness are depicted through her interactions with the school doctor and the class.

A student in Class 6-2. A boy. He is bright and energetic but a bit restless. Though often viewed lightly by those around him, he is actually honest and cares for his friends, sometimes hiding anxiety or loneliness behind his actions.

A student in Class 6-2. A boy. A very outgoing type who observes his surroundings well. On the other hand, even when he has worries or troubles, he tends to keep them all to himself.