Drop

"Drop" tells the story of a boy named Shinanogawa Hiroshi, who grew up in the 1980s. He became inspired by the Be-Bop High School manga and decided to become a delinquent. Hiroshi dropped out of a private middle school and transferred to a public school. With his hair in a very shot hairstyle dyed to red, he attracts the attention of the schools gang lead by Iguchi Tatsuya. After a fight with Tatsuya, Hiroshi ends up joining their delinquent gang. What follows is the story of friendship and making the right choices.
(Source: AsianWiki)
~~ Adapted from the novel "Drop" (ドロップ) by Shinagawa Hiroshi (品川ヒロシ).