Teihon Bad Boys

Tsukasa Kiriki is a boy that comes from a rich family. He spends his life sheltered from the outside by his parents undetermined to change. That is until his homeschool teacher, Mrs. Michie, says something that gives him the drive to be a delinquent. These are how he spends his days as a Bousouzoku.

This manga ran for 22 volumes from 1988-1996.