|“||I will kill anyone who harms my beloved son!||”|
Yoshihiro was part of DIO's organization but after the latter was vanquished, laid low and kept one of the Arrows with him. As Yoshikage Kira's father, he is fiercely protective of his son despite the latter being a serial-killer. Yoshihiro attacks the Joestar Group and later creates several Stand users with the Arrow to assassinate them when they go after Yoshikage.
Yoshihiro Kira is a ghost, having the appearance of a lightly-built, balding old man. Yoshihiro has a small mustache and a goatee of dark hair.
While he was human, Yoshihiro is shown to have fancied modest, respectable attire; consisting of a striped green button-down shirt with a purple tie, yellow cardigan and a loose fitting lime-green suit. As a ghost, however, Yoshihiro now only wears his striped green shirt with matching pants.
He is extremely devoted to his son and takes supporting him and his ambitions to the extreme, even going as far as to protect his son's serial killer lifestyle. There is evidence that his son Yoshikage inherited his malignant soul from him, as Yoshihiro utterly disregards the women his son has killed from his youth, and the fact that Enya and DIO saw fit to entrust him with the Bow and Arrow.
- Main article: Atom Heart Father
Yoshihiro Kira remained as a ghost in a camera when he died and is able to trap people into the space photographied by the camera. Able to move inside the photo, anything he does inside will translate into the real world.
Around the time of Part III, Yoshihiro gets the Stand Arrow from an old woman in Egypt to protect his son. When Kira was 17, Yoshihiro used the arrow at some point to awaken Killer Queen, presumably after the Sugimoto's slaying of 1983 since their corpses had not disintegrated.
Yoshihiro then died of cancer before the events of Part IV when his son is 21, with his wife dying shortly after him. His stand enables him to remain in the mortal world to help protect his beloved son and let him maintain his "normal" life. In death, he goes in the alleyway and learns of the girl residing in without recognizing her, he then tells his son to not look behind him in case he goes there.
Diamond Is Unbreakable
Josuke, Okuyasu, Koichi, and Jotaro first meet Yoshihiro when they investigate Yoshikage Kira's house for clues to discover where he is hiding. In the process, Yoshihiro attempts to imprison and kill them with his Stand abilities, but only manages to imprison Josuke and Jotaro. However, Jotaro is able to make Yoshihiro occupy so much of a photo that he can no longer manipulate his surroundings. Undeterred, Yoshihiro escapes with the Arrow and awakens several Stand users, impelling them to thwart the efforts of Josuke and Rohan to find and stop Kira as a kind of payment. When they fail and/or move to Josuke's side, Yoshihiro and Kira are at a loss on what to do until Yoshihiro's Arrow pierces Kira. This awakens the Another One Bites the Dust ability on Killer Queen.
Nonetheless, Kira accidentally lets Josuke safely discover his identity, and so is forced to fight him. During the fight, Yoshihiro manages to slip himself inside of Hayato Kawajiri's jacket, allowing him to communicate Josuke's location inside of a house since Yoshikage could not see him without entering Crazy Diamond's range. Unfortunately for Yoshihiro, Josuke discovers his ploy and snatches the cell phone he was using to tell Kira where Josuke was. By disguising his voice, Josuke manipulates Yoshikage into using one of his air bombs to blow up Yoshihiro, killing him by incinerating the photograph he was in.
In the Alternate Universe, Holy Joestar is married to a man named Yoshiteru Kira instead of Sadao Kujo, who seems to be Yoshihiro's JoJolion counterpart, and like in the original universe, he is the father of Yoshikage Kira. It is unknown whether he even has a Stand in the SBR Universe. It is hinted by Kyo Nijimura that he is dead, as she states that herself and Holy are the last members of the Kira family.
In Video Games
Yoshihiro appears as the stage hazard on the Kira Estate stage. He brandishes a knife and uses it along with his Stand, Atom Heart Father, to attack players, traveling along a curving path.
Yoshihiro appears as a special trait for "Kosasku Kawajiri" in Eyes of Heaven. When "Kosaku" reaches his last health bar, Yoshihiro appears and causes 'Contact Bomb' and 'Impact Ignition Bomb' to have nearly perfect accuracy for 30 seconds, referencing his role as a guide for Yoshikage's air bombs near the end of Diamond is Unbreakable.