A kid walks into a new school already marked as the problem child, and the entire show is built on him proving everyone wrong by being exactly what they feared. The comedy doesn't punch down at the school or milk the transfer student bit, it earns its laugh from watching a genuine troublemaker accidentally become the person his classmates needed him to be. Seventy episodes means this isn't a one-joke premise that overstays its welcome; it's a real portrait of how a reputation can become a cage, and how stubborn chaos might be the only thing that breaks it open.
A boy with a reputation as a troublemaker transfers into a new school. Harris no Kaze is a comedy TV series from 1966, running for 70 episodes, built around this newcomer and his arrival at the school.