Matsuzaki-sensei is a physical education teacher and guidance counselor at PK Academy, wielding an imposing presence that strikes fear into students. His reputation as a strict disciplinarian stems from a "bad cop" approach to managing behavior, marked by seizing prohibited items and sparking covert student operations to reclaim their possessions. Though his methods draw widespread unease—summoning offenders to his office for rule violations—some recognize him as a necessary enforcer of order, particularly for those requiring rigid boundaries. While most regard him with trepidation, his uncompromising tactics are conceded to instill discipline in impressionable individuals, reinforcing structure where leniency might falter.