With the first place in a university business competition and a father running a time-honored leather bag store, Yusuke Tsuruta is in the "outstanding" category among university students. After graduation, Yusuke decides to start a business with his classmate Kengo Sato. After declaring that "Company is not school!", he works hard every day to make his business successful.

Komukai Riko is a young single woman and works for an event planning company. She is considered average in regards to her personality and appearance. One day, her co-worker mentions person of a mass production model. Komukai Riko asks herself if she could be such a person for a mass production model and she answers her question affirmatively. Around this time, she happens to see plastic model Zaku...

Kashi Kota, a third-year student at Hanayama High School, has spent his entire high school life trying to “stay out of sight, out of mind,” but after losing a game of “rock-paper-scissors”, he is forced to become a member of the choir competition committee.

Members of SWORD win against Wangan Rengogun, which is led by Kohaku. The city becomes peaceful again. Nevertheless, the most brutal gangs, Doubt and Prison Gang, appear. They try to dominate the area controlled by SWORD.

Chiku is a devastated and dangerous town with 5 gangs fighting fiercely. Mugen and the Amamiya Brothers clashed, leading to Mugen disbanding.

Members of SWORD win against Wangan Rengogun, which is led by Kohaku. The city becomes peaceful again. Nevertheless, the most brutal gangs, Doubt and Prison Gang, appear. They try to dominate the area controlled by SWORD.

Chiku is a devastated and dangerous town with 5 gangs fighting fiercely. Mugen and the Amamiya Brothers clashed, leading to Mugen disbanding.