Yu Yu Hakusho - The Spirit Detective Saga
Series 1- Volume 1 - Episode 3
Kuwabara: A promise Between Men

While walking to school Kayko is attacked by some boys from another school, but Kuwabara saves her and in the process gets in trouble in school. In order for Kuwabara to stay in school and keep his friends out of trouble, he agrees to a promise not to fight for a week.

With corrupt teachers setting Kuwabara and his friends up for fights, and failure in their tests it seems Kuwabara doesn't have a chance in keeping his promise. With a little help from Yusuke guiding him through dreams he might stand a chance at keeping his promise between men.