Nagisa Shiota is a central character in the anime series 'Ansatsu Kyoushitsu' (Assassination Classroom). He is a student in Class 3-E at Kunugigaoka Junior High School, tasked with assassinating their teacher, Koro-sensei, an octopus-like creature threatening to destroy Earth. Despite his small stature and unassuming appearance, Nagisa possesses exceptional assassination skills and a keen strategic mind. His calm demeanor and analytical abilities make him a natural leader. Throughout the series, Nagisa undergoes significant personal growth, gaining confidence and discovering his passion for teaching and helping others.