Matsuoka-sensei is the young, attractive, and bespectacled homeroom teacher for Chiyoko Kurotori's fifth-grade class. While striving to maintain order among his students, he possesses a notable tendency to lose composure easily when faced with unusual or supernatural occurrences, a consistent trait throughout his appearances. An early incident saw him mock student Daigorou Iwata about Iwata's eating habits. However, following an unspecified significant event, Matsuoka-sensei recognized his misconduct, formally apologized to Iwata, and demonstrated a capacity for professional growth by acknowledging his shortcomings as an educator. His character primarily functions within the classroom environment and student interactions, with no further details on his background or development in other media provided.