Yoshikage Kira/Personality and Relationships

Personality
"I really want to reveal Yoshikage Kira's true nature to that girl on the right. I'd like to reveal my deep desires to her. I really want to touch her thin neck with my hands...and choke her to death."

Kira is a serial killer, characterized as highly egocentric and psychopathic, with a few obsessive-compulsive tendencies. He is also a hand fetishist.

Kira longs for a peaceful life, safe from any worry, and does not wish for it to be interrupted. Whenever that peaceful life seems assured, Kira adopts a jolly and confident demeanor. Although he is highly intelligent and possesses many talents, this yearning shows in his dislike of coming in first, and he even made it a point to never rank better than 3rd in any competition so as not to stand out. Since his youth, Kira has been avoiding standing out, living a healthy life. He becomes bothered when someone disrupts his habits and goes to extreme lengths to get it back. As his father pointed out, this will to stay in the background was so bad that if bullied or denied his favorite toy, Kira would bite his nails until they bled, being the only way he's found to express his frustration.

However, beneath his façade of a simple, humble salaryman, Kira is very abnormal. The most abnormal characteristic of Kira are his frequent murderous impulses. Kira targets women, or, more specifically, women with beautiful hands. Kira possesses a hand fetish, which he discovered when he found himself aroused by the Mona Lisa's hands. However, his desire has never extended to the rest of the female person. This results in murdering random women, not caring in the least how they look like or behave, in order to acquire their (severed) hands as "girlfriends", acting as if the severed hands were actually sentient and conversing with them, even offering them various gifts; when one "girlfriend" begins to decay, he disposes of it and goes off in search of a replacement. Kira is an opportunistic killer, his modus operandi being spotting a potential victim, following her to her house, and murdering her when both are isolated. His Stand erasing any proof, these murders are actually reported as missing persons. Moreover, Kira has expressed various other similarly violent impulses such as the desire to choke his victims to death and has horribly scarred at least Reimi Sugimoto.

Apart from his murders, Kira is particularly violent when someone threatens his way of life or publicly humiliates him. Since Kira doesn't want to be noticed, he will try everything to solve his problems without facing anyone directly. However, if he doesn't have any other choice, he will instantly try to kill whoever discovers his true nature. Kira is quick to drop his polite demeanor, rudely insulting his foes or violently beating them before killing them. After Koichi's Echoes ACT 3 results in Kira making a fool of himself in public and attracting unwanted attention, Kira went on his way to torture and humiliate Koichi, putting his shoe into his mouth and slamming his face against the ground. Kira has a hard time controlling these impulses, as seen when Hayato Kawajiri threatened to blackmail him. Kira lost his calm attitude and murdered him despite knowing he couldn't afford such a mistake.

Kira is also afflicted with a number of other quirks. Apart from his wish for a monotonous and tranquil life, Kira's OCD also makes him very meticulous and thorough. Kira has sophisticated tastes, notably buying his lunch at the best store in town as well as wearing Valentino suits. He doesn't tolerate any imperfection, and is even willing to lose time fixing Koichi's socks, becoming agitated when he sees them being worn inside-out. Furthermore, during his time as Kosaku Kawajiri, Kira made sure to perfectly mimic his new identity in every way, notably Kosaku's hand-writing, which he trained himself to do conscientiously. Kira's solitary nature is partially stemmed from his disgust of people who don't behave as properly as he does.

Kira is also an egocentric and selfish man, akin to a spoiled child. He doesn't care that is crimes involve murder and make his victim's relatives suffer. He only seeks to satisfy his basic instincts. In addition, Kira is determined to preserve his lifestyle, and being set back only increases his determination. Kira is also quick to shift the blame to someone else for his troubles, notably the Joestar group, for ruining his life. Kira possesses a twisted pride in having managed to mix his tranquil lifestyle and his serial murders for so long, and categorically refused to flee the town and live in fear, preferring to maintain a shaky façade of normal life with the Kawajiri's.

Kira believes that he has luck and fate on his side, exposing a superstitious façade, claiming that whenever faced with an obstacle he will be able to make it through with a combination of hard work and opportunity. He measures and collects his own fingernail clippings, using them to predict his murdering luck off of their length.

When Kira was pierced with the Arrow, his demeanor became much more relaxed and prone to elation due to his new-found power, which guaranteed that anyone approaching Hayato would be killed. Ecstatic to possess a power which would dispose of anyone who investigated him, Kira allowed himself one loud boast, which caused his downfall as Josuke overheard him claiming to be "Yoshikage Kira".

During his confrontation with the Stand Stray Cat, Kira expressed a desire to protect his "wife"  Shinobu Kawajiri and even showed relief at her safety; a feeling that confused him, and Kira rationalized it as him merely not wanting to arouse suspicion. Whether these feelings were genuine or not is left unanswered.

As a ghost, Kira lost all memory of his previous life and has thus lost his temptation to kill. However, his desire for a peaceful existence and his latent brutality remained.

Family
Yoshihiro Kira: His father is protective of his son, enough so that he was willing to support his son's murderous streak without a care. Yoshikage himself is shown to get along well with his father and trusts him to help aid in killing his allies and leading the peaceful life he desires.

Mother:

Kosaku Family
Shinobu Kawajiri

Hayato Kawajiri

Stray Cat

enemies
Josuke Higashikata

Rohan Kishibe

Koichi

Okuyasu

Jotaro Kujo:

Victims
Reimi Sugimoto:

Arnold:

Shigekiyo Yangu:

Aya Tsuji: