Red Tail

is an Ishiyama High School girls gang founded by Misaki Oga some time before the series. It's possibly one of, if not the, oldest gang in the school as it was founded before the current Tōhōshinki. The current leader, Nene Ōmori was given her title after Aoi Kunieda resigned. The group has a strict policy that any member who has or gains a boyfriend must immediately quit.

Current

 * Nene Ōmori - Fourth and Current Leader
 * Chiaki Tanimura
 * Yuka Hanazawa
 * Ryōko Asuka: a quieter, sarcastic member with a mask like a stereotypical female Japanese delinquent
 * Kaoru Umemiya: a taller member with a boyish haircut

Former

 * Misaki Oga - First Leader (retired)
 * Unknown Second Leader (retired)
 * Aoi Kunieda - Third Leader (resigned)