Big Magnum Mr. Kuroiwa

A man carrying a black attaché case arrives at the school, where even the teachers are terrified. The man's name is Tetsuo Kuroiwa. He is commonly known as "Big Magnum Kuroiwa Sensei''. His age and background are unknown. His name is not on the national list of teachers. The roar of the Magnum reverberates through the School of Violence today as well!! Eros and violence emitted by Tatsuo Nitta, the "Silent Don.''