|Manga||287. Definition of Bullying|
The Homeroom Teacher is first seen leaving Nishi's Murderous Classmates alone telling them to self study.
Italian Alien Mission ArcEdit
He is seen hurriedly leaving Joichiro Nishi and his Murderous Classmate alone telling them to self study in stead of teaching them, giving Nishi's classmaate the chance to throw him out of a window and allowing Nishi to retaliate.