Kotaro, An Audacious Karate Boy (1984)

Lewd, long-haired karate kid Kotaro Shindo spends his days causing amok at the prestigious Tsurugamine Academy, until the Disciplinary Committee decides enough is enough, and puts a bounty on his luscious locks. Meanwhile other sinister forces are working in the shadows to put Kotaro to use for their own ends.

Unfortunately the movie Kotaro, An Audacious Karate Boy is not yet available on HBO Max.