Editing JoJo's Bizarre Adventure (section)

===Part 4: Diamond is Unbreakable===
[[File:Diamond is Unbreakable.jpeg|left|thumb|200px|''Diamond is Unbreakable'' cover]]
It's the year 1999 in the Japanese suburb of fictional town, Morioh, and the now 28-year-old Jotaro meets a high-schooler named Koichi Hirose while looking for someone named Josuke Higashikata. Jotaro reveals to Josuke three facts: First, he is Jotaro's uncle, despite the age difference; second, his father is a 79-year-old Englishman (i.e. Joseph Joestar); finally, there is a looming threat in Morioh (later revealed to be a murderer). After dealing with the killer, it is revealed that there is someone in Morioh awakening Stands in people by using a Golden Arrow (used to further connect this with Part 3) for an unknown purpose, so Josuke and Jotaro resolve to find him. When the culprit, Keicho Nijimura, reveals his intentions, he is killed by Red Hot Chili Pepper, one of the aforementioned Stands who then steals the Arrow. Akira Otoishi, RHCP's User, learns that Joseph is coming to help find him, so he plots to murder Joseph as he arrives in order to get away clean, but this plan backfires and he is arrested thanks to Keicho's younger brother, Okuyasu Nijimura.

Eventually Koichi and the surly, eccentric mangaka Rohan Kishibe find out there is a serial killer in Morioh from the ghost of his first victim, who requests that they find him. Soon enough, the killer, Yoshikage Kira, is forced to reveal his identity and disguises himself in order to hide from the heroes while trying to keep his desire to kill in check. Fortunately, Kira's cover is blown thanks to the son of the man whose identity he stole, Hayato Kawajiri, and he is killed in a final altercation. With Kira's threat ended, Joseph and Jotaro leave Morioh in the hands of its citizens, The Golden Heart of Morioh.

This Part marks the full change of Stand names going from Gods and Tarot Cards to songs, albums, and bands (leading to plenty of renaming in subs and dubs to avoid copyright issues) along with their powers being more specialised rather than Part 3 Stands' mostly vague and superabundant abilities. Here we learn what causes Stands to awaken along with a more detailed list of rules for Stands. It is important to note that Part 4 is when Araki's art style completely shifts from the almost blocky, muscled style of Part 3 to a softer, slimmer and more detailed and flamboyant style. This part is also important theme-wise, as the major focus of it is how normal people can live with stands and blend in with society, something which would be integral with future arcs, though trouble stills comes their way because somehow Stand users tend to be drawn to each other. It is also a lot more laid-back with almost half of the chapters being about the characters', mostly Josuke's and Okuyasu's, daily misadventures, drawing similarities at times to the slice-of-life genre.