Ashita e Kick Off(1976)

When Isoshita Junior High school upstart, Tetsuya Hikage, picks a fight with neighboring Hakuyou High School, he bites off more than he can chew when the Hakuyou American Football team join the fray. Losing his first ever fight, he vows to exact revenge on the rich kids of Hakuyou High by creating Isoshita's first ever American Football team and beating them. Within 24 hours, Hikage recruits an entire team as they resolve to spend their entire summer vacation training. However, when they realize they don't have a ball, or even understand the rules, it dawns on them that it's gonna be a long summer...