Koji Kiyohara
- Primary work
- Crazy Diamond's Demonic Heartbreak
Other recorded work links
- Occupation
- University Student↗
Koji Kiyohara (清原 幸治, Kiyohara Kōji) is a tertiary antagonist featured in the spin-off manga Crazy Diamond's Demonic Heartbreak and the light novel Crazy Heartbreakers. He is a university student who shoots Josuke and random civilians of Morioh with a crossbow.

Image attribution details
Koji Kiyohara. Source illustration via JoJoWiki; copyright remains with the original rights holders.
Image via JoJoWiki. Original franchise/production rights holders retain copyright; the wiki text CC BY-SA license does not license this image.
Original image ↗ · Archived image ↗01Basic information
02Appearance
Koji has dark, neck-length hair that is slicked back. He is described as a handsome man with well-defined facial features. He has a wavy strand of hair dangling over his forehead on each side. His irises are small and he has a wide nose. Koji wears a puffer vest on top of a hoodie, baggy pants, and boots. He also wears a watch on his left arm and carries a backpack along with a quiver for his crossbow.↗↗
03Personality
Koji is a sociopathic narcissist who takes pleasure in hunting strangers as if they were animals. Koji is a vain man, believing that he's special compared to others around him and thinks he is the only one with the right to kill people. From a young age, he had been favored by the adults and teachers around him and had never struggled to make friends. He believed he was a chosen individual, a truth he considered predetermined by fate. His ego is hurt when a random teenager like Josuke interferes with his plans.↗↗↗↗
04Story
SPOILERS
Crazy Diamond's Demonic Heartbreak
Koji starts indiscriminately firing bolts at civilians who are running away from an illusionary military helicopter produced from Pet Sounds 's Stand. After he happens to shoot a kid in the neck who was running past Josuke, he also fires a bolt at Josuke's back. Enraged, Josuke dashes toward Koji to stop him. Koji shoots another bolt at Josuke, but Josuke easily deflects it with his Stand, surprising Koji. As he wonders who Josuke is, he continues shooting more civilians in the back.↗
Hol Horse fires two bullets with his Stand, blowing off Koji's ear and a fragment of his crossbow. Pet Sounds starts flying away, momentarily distracting Hol Horse and Josuke, allowing Koji to run away. Hiding in bushes nearby at a park, he waits for Josuke to follow his blood trail while he aims his crossbow. However, Josuke had used his Stand to restore the fragment of the crossbow that broke off and used it to track Koji.↗↗
Koji is taken into custody and the police investigate his home, where they find videos of him shooting animals to death. They intend to do a psychological evaluation on him, which means it might take a long time before he has to go to trial. While sitting in his jail cell, mumbling to himself in fear, a police officer shines a flashlight at his cell. Koji suddenly sees a memory of Kazuki Karaiya sitting beside him in a police car. Karaiya asks him how it felt to lose.↗↗
06Sources & attribution
- Koji Kiyohara
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