Worst Bad Girls: Bloody All-Out Conflict (2011)

Ai admires delinquents and applies to Mana and Hikari to become their apprentice. At first she is rejected, but a word from Junichi, the team's leader, allows her to become their apprentice. At that time, Junichi receives news that Manabe has returned from the juvenile detention center. Manabe is a delinquent from a different town and holds a grudge against Junichi and his friends.