Rohan Kishibe/History

Early life
When he was young, he was often left at his babysitter's house, Reimi Sugimoto. During the night of August 13, 1983, his parents had a important thing to attend to and so Rohan was left with Reimi. He was saved by Reimi at the cost of her own life from the serial killer Yoshikage Kira, but was in shock and couldn't serve as a witness. He intentionally chose to not remember much of this life in his adult years.

At some point during his childhood, Rohan, while playing on the beach, fell onto some rocks and broke ribs on the left side of his body. Because of that injury, he experiences pain in that area if he finds himself wherever there is extremely low atmospheric pressure.

Years later, Rohan met a woman named Nanase Fujikura at the inn of his grandmother. Rohan, at the age of seventeen at the time, becomes intrigued by her and attempts to use her as a model for his drawing. Nanase shows interest in his drawings and asks to read his work once he finishes it.

Days later, Nanase tells him the story of Nizaemon Yamamura, who created the "Under the Moon", which Nanase describes as "the darkest painting in the world." She leaves the room to answer her phone briefly, but when Rohan goes to check on her, she appeared to be crying about her divorce and goes running out of the house.

A week later, she returned and Rohan knocked on her door. She opened the door and embraced him while crying. Rohan attempts to show her his drawings of her, but she suddenly becomes enraged and begins stabbing the drawings. She runs away crying again, only this time she doesn't come back.

Diamond is Unbreakable
Rohan first appears as an antagonist to Koichi and Toshikazu Hazamada when they go to his house for an autograph. After they try to sneak a peek of the new issue of his manga, he activates his stand and prevents either of them from attacking him. He then reads their memories, and in doing so, finds out about Josuke Higashikata, Okuyasu Nijimura and others affiliated with the two. He decides to use Koichi and Hazamada as materials for his manga. After using Koichi as his personal "inspiration", Okuyasu and Josuke find out about where Koichi has been going by following him. Rohan attempts to take advantage of Josuke's sensitivity about his hair and force him to open his eyes and be subject to Heaven's Door, but this backfires when Josuke's anger prevents him from recognizing Heaven's Door in the manga, enabling him to pummel Rohan without restraint. Rohan's manga, Pink Dark Boy, is suspended for a month as a result of his defeat (though interestingly, Rohan was never shown to have been deformed from being punched by Crazy Diamond).

Upon leaving the hospital, Kishibe finds a lot of respect for Koichi, in whom he confides, and at the same time holds an extremely deep hatred towards Josuke. When Josuke finds an alien named Mikitaka Hazekura, he decides to play a dice game with Rohan, who soon finds out that Josuke is cheating and threatens to take off his little finger if he doesn't stop. However, Rohan is ultimately unable to prove Josuke's dishonesty when his house catches on fire in the middle of the game.

Rohan later encounters stand user Ken Oyanagi, and proceeds to play five matches of Rock, Paper, Scissors, almost losing his stand in the process. After defeating him, he's attacked by Highway Star, who lures him into a room with a vision of Kira in a room cutting off a woman's hand. Later, he also encounters Masazo Kinoto, who harbors Cheap Trick on his back. After seeing Masazo's back, the stand transmits himself to Rohan's back. Rohan eventually tricks Cheap Trick by taking him to the Ghost Alley and forces him to look backward. As several hundred disembodied hands grab Cheap Trick, Rohan inscribes on Cheap Trick that he will be dragged to Hell, even though Rohan himself does not know if it even exists.

During the final investigation of Yoshikage Kira's new identity, Rohan narrows it down to Kosaku Kawajiri after finding a suspicious photograph of Kosaku being tailed by his son, Hayato Kawajiri, holding a video recorder. Rohan manages to meet with Hayato and uses Heaven's Door to find out more about his father. As Rohan opens contents of Hayato's body book, he discovers a warning on Hayato's pages to not read further. Rohan eventually discovers that Kosaku is actually Yoshikage Kira in disguise. His excitement of this revelation is cut short when a miniature Killer Queen appears, revealing that Kira has unlocked a new Stand Ability, Bites the Dust. By discovering Kira's identity through Hayato, Bites the Dust marks Rohan. Wounded, Rohan feebly attempts to call out to Koichi and Jotaro who were just a few blocks away from him and is promptly killed by an explosion, which, coincidentally, reminded him of his first time with Josuke. Bites the Dust loops time back an hour and in the second version of the hour, Rohan is killed again as he was already marked by Bites the Dust in the previous time loop, despite not meeting Hayato in the current time loop. In the third and final time loop, Kira eventually is forced to deactivate Bites the Dust in order to protect himself when Josuke discovers his identity, sparing Rohan just seconds before his fate.

(The information below derives from the TV Anime. As such, it may or may not be considered canon.)

He is seen preparing to draw a manga. He is later mentioned by Okuyasu, who states he heard a rumor about him being caught shoplifting at Kameyu store.

The Book: 4th Another Day
(The information below derives from a Light Novel not written by Araki. As such, it may or may not be consideredcanon.)

Rohan appears drugging 34 cats to find out the one who invaded his house earlier, but forgets about the cat after finding Trinita covered in blood. Searching for his master with Koichi they find the corpse of Hanae Orikasa. Rohan uses his stand on Trinita and discovers that the killer has red marks on his arms, and so tags along with Koichi to find him.

Mutsu-kabe Hill
In order to research about a Yokai legend, Rohan buys 6 mountains in order to stop a corporation who wanted to build a resort in that area. After meeting Naoko Osato, Rohan uses Heaven's Door on her and discovers the story of her accidental murder of Gunpei Kamafusa, a gardener whose body never stopped bleeding and whom Naoko has been obliged to take care of since then. Suspecting him to be a yokai, Rohen investigates the region around Naoko's house until he comes across a young girl. The girl tells Rohan she's not allowed to talk to strangers and runs away, and when Rohan tries to catch her, the girl fall and hit her head on a rock, bleeding just like Gunpei. Rohan realizes this girl is actually Osato's daughter with Gunpei. Surprised the man who became a corpse was able to impregnate Osato dead, Rohan soon realises the girl is a yokai trying to possess him and uses Heaven's Door to write one last memory before all her memories fade away and she dies: "I don't know Rohan Kishibe. Even if I meet him, I won't see him". When the girl comes back she briefly shows her true form to Rohan, but leaves after not seeing him. Saved, Rohan names the yokai a Mutsukabezaka, and declares his research complete.

Later, because the terrain of the mountain range lost its value since the scheduled resort construction was cancelled, Rohan goes bankrupt, has to sell his possession save a De Staël's artbook and lives Koichi's place. Rohan then meets with his editor, Kagamari Minoru, asks Minoru for a borrow in advance from his manga pages, and tells him about his previous adventure.

Rohan at the Louvre
Rohan tells Josuke, Okuyasu and Koichi about Nanase. He then decides to investigate about the painting she told him and travels to Paris. There he discovers the painting is located at a abandoned section at the Louvre and asks to see it. Thinking it's strange there's a painting at a abandoned section and its archives being top secret, the interpreter Noguchi accompanies Rohan in there with Gaucher and two firefighters. When the group finds the painting they are attacked by a ghost mob of their relatives and everyone save Rohan is killed the same way the ghosts died. Rohan is almost killed by his grandmother, but the ghost of Nanase, who reveals that she was actually his ancestress, reveals to him the painting uses the memories of its victims. Thus, Rohan erases his memories with Heaven's Door, but not before writing a clue to recover it once he's outside of the Louvre. At the end, his four unfortunate companions are considered missing and Rohan discovers the painting was burned after being examined by scientist, even though he doubts it.

Rohan Kishibe Goes to Gucci
Rohan, accompanied with a beautiful interpreter, goes to a Gucci factory to investigate about his grandmother's treasured bag, that has the strange ability to vanish valuable things. He is informed by the leather goods artisan in charge that it is one of three bags created by an genius artisan from Gucci. Rohan asks for the bag to be fixed, even though the artisan tells him he doesn't understand the bag's true purpose. The interpreter gets Rohan drunk and steals all his valuable things, except for the bag, leaving him wandering alone. Fortunaly, he finds an umbrella and a firelighter to shield himself from the rain. Rohan finds a hotel, but is unable to pay for any room. It is then that a man shows interest in Rohan's recently found umbrella, offering the exact value of the bills Rohan made the bag vanish for it. Rohan then comes to the conclusion that the bag had a Stand bound to it, with the ability to take away valuable items but giving back their equivalent during misfortune, but laments that he had the bag fixed and now can't make use of the Stand anymore.

Millionaire Village
Rohan and a manga editor by the name of Kyoka Izumi go to investigate a hidden village located in the mountains for his new one-shot at her suggestion. Initially believing it to be related to the mountains he previously bought, Rohan agrees after Izumi tells him how every resident in there became rich at the age of 25. Izumi plans to buy a house in there, as she now is 25 too. They are greeted by the butler Ikkyu, who tests them about good manners. After Izumi fails the test, Rohan discovers that a bird he found earlier had died, while Izumi's mother and fiancee died in a car crash. Rohan becomes suspicious and uses Heaven's Door on Ikkyu to discover the mystery behind the village and trick Ikkyu to break a rule by writing on him. The village was under a curse that gave things to anyone who showed good manners, while those who didn't lost things. Ikkyu claims that this time Rohan broke a rule, as he hadn't give permission to be turned into a book, and Izumi starts to have a heart attack. Rohan begs for another test to save Izumi and is successful in it, all the while making Ikkyu break a rule (as he wrote earlier). Ikkyu says Rohan cheated and asks for another test, but Rohan denies it and carries Izumi away from the village. He notices the bird also returned to good health.

At a Confessional
The mangaka heard a horror story from a mysterious sinner confession. As he is visiting Italy, Rohan decides to research the churches, especially for their architecture and spiritual background. He walks into a confession booth to research the interior, but mistakenly walks into the side reserved for the priest. Shortly after, a man walks into the other side of the booth and confesses his sin to Rohan, believing him to be the priest. Rohan hears his confession anyway, interested in getting information out of the man's horror story. The man tells he has been cursed by the spirit of a beggar he had been responsible for the death, who would come to take him at his happiest moment. After telling the story, where the man continues to explain his sins and why he was still alive after apparently killed by the spirit, it is revealed that he had found a servant who was willing to do anything for him, and used plastic surgery to alter both his and the servant's appearances, thereby fooling the beggar into dogging the servant instead. The spirits of the beggar and the beheaded servant then dog the man, and both vow to watch him around the clock to make sure that he does not do anything suspicious again. Rohan watches on with curiosity, deciding to interview him later if given the chance, as he didn't know what happened to the man after that.

Stone Ocean
When Made in Heaven sped up time to the point where one work day lasted for less than 5 minutes, Rohan was mentioned as the only mangaka to continue to meet his weekly deadlines, easily publishing over 20 pages in less than an hours time without food or sleep. Rohan himself does not appear however, as it is mentioned over the radio.

JORGE JOESTAR
Rohan is the one who called in about a murder in Morioh, which another character, Kato reports about, and is how the protagonist Joji Joestar ends up there. In a relationship with Reimi, somehow. As noted in Stone Ocean, Rohan escapes the effects of Made In Heaven by being so focused on his manga that he does not realize the world is changing around him.