Onizuka-sensei is an ex-motorcycle gangster who yearns to become a schoolteacher in the manga, anime, and TV series GTO, Great Teacher Onizuka. GTO was published in 1997 by KC Magazine Shounen Comics.

To help foster a better understanding between the two countries, Onizuka has been invited to a one-week teaching assistant program at a Taiwanese high school. He takes Ryuuji with him and sets off.