Ten years after the Bubble War, the dichotomy between the rich and the poor in the world becomes more prominent and Japan is no exception. The rich seek to satisfy their desires and derive pleasure for themselves, and Tokyo has materialized into such a city as a result. Saiga, once a war photographer, works for Hibara Ginza in the capitalist state of Tokyo. He infiltrates the Roppongi Club, a secretive base located in the red light district of the city, to collect information about them. However, he was caught in the process and brought forward to a girl called Kagura who was in the midst of a ritual. His contact with Kagura awakens his special ability: the power to make things explode when photographed. In order to unravel the mystery behind the Roppongi Club and Kagura, Saiga begins his solitary battle.

In the coastal city of Naples, corruption is teeming—the police blatantly conspire with outlaws, drugs run rampant around the youth, and the mafia governs the streets with an iron fist. However, various fateful encounters will soon occur. Enter Giorno Giovanna, a 15-year-old boy with an eccentric connection to the Joestar family, who makes a living out of part-time jobs and pickpocketing. Furthermore, he is gifted with the unexplained Stand ability to give and create life—growing plants from the ground and turning inanimate objects into live animals, an ability he has dubbed "Gold Experience." Fascinated by the might of local gangsters, Giorno has dreamed of rising up in their ranks and becoming a "Gang-Star," a feat made possible by his encounter with Bruno Bucciarati, a member of the Passione gang with his own sense of justice. JoJo no Kimyou na Bouken: Ougon no Kaze follows the endeavors of Giorno after joining Bruno's team while working under Passione, fending off other gangsters and secretly plotting to overthrow their mysterious boss.

One day, high school friends Akira Houjou and Chiaki Asami flip a coin and make a vow that completely changes their fates. For his part, Akira immediately drops out of school to join the yakuza, while Chiaki toughs it out in order to become a politician's aide. Although they seem to have made polar opposite choices, the two friends feel as if they are two sides of the same coin; they will do whatever it takes to reform Japanese society as they see fit.

Shinjuku, 1983. A member of the Kaeda Yakuza gang, Akutsu Jouji, has lost in a brawl with a university cheering squad, and begs for forgiveness through bitter tears. Since then, nothing has gone well in Jouji's life, until 10 years later in 1993, his friend was ordered to kill him, and as he ran away he killed himself, ending his miserable life. But when Jouji opened his eyes, he was in Shinjuku in 1983, at the fight with the university students that caused things to go wrong. Now with ten more years of memories and experience, Jouji repels the university students with spirit and wisdom. Now he swears to wear a gold emblem around town, and begins his life anew. (Source: Hokuto no Gun)