Uke is a Yankee with a split personality
Kiyonaga Akane had just debuted as a delinquent when he was attacked by a rival school's delinquents. After being saved by Kidou Ryouji and Kurokawa Tarou, he begins to idolize Kidou as his hero. As for Kurokawa, Akane views him as nothing but an annoyance, since he insists on teasing Akane at every opportunity...
Ryouta, or Ryou-chan, and Akito, aka Acchan, are childhood friends. When a tragic accident befalls Ryouta in which he ends up in a coma for a few years, Akito feels responsible and guilty that no one is blaming him for the accident. As a high school student, he begins to imagine Ryouta punishing him for what happened, even though the real Ryouta has awakened from a coma and can't remember the event in question.
Chapter 4-5 follows the story of Inuyama Eita, who is saved from being extorted by a group of delinquents by Shiina Haruhito, a delinquent from a local high school. After being saved, Eita was determined to make Shiina-senpai his "aniki" and followed him to his high school, where he made his high school debut as a delinquent.
Chapter 3-4 is a continuation of the story of Hiyama Ren and Keitatsu from Bousou Kareshi (Chapter 6 & 8).
Tanaka Yuuta idolizes the manly and cool Gouriki Ittetsu, who he calls "aniki," to the point that he copies his style and mannerisms, believing that this will give him attention from the ladies. However, after visiting the audio visual room in an attempt to catch his aniki with a girl, he realizes that his aniki isn't what he thought he was.
Chapter 4 - 5.5 tells the story of Hara Shuuji, who just transferred to a school outside Tokyo, and his reunion with his childhood friend, Yoshie Kenichi, who has since become a feared delinquent.
Yankees Ryuunosuke and Kagetora and their gangs are always fighting with each other. One day, a typhoon destroys all of the hard work Ryuunosuke and his gang did to prepare for a festival the next day. When Kagetora offers to help rebuild, Ryuunosuke starts to think that maybe Kagetora isn't so bad...
Muchina Kimi to Shitaikoto