Yukio Yamaji Teen Killer Turned Serial Killer

Yukio Yamaji Teen Killer

Yukio Yamaji was a teen killer and serial killer from Japan who would start to murder at sixteen years old. According to court documents when Yukio Yamaji he would fatally beat his mother to death with a metal baseball bat. When arrested he would be sent to prison however would be paroled three years later.

Once released from prison this teen killer would sexually assault and murder two women a couple of years later. For the double murder Yukio Yamaji was sentenced to death and would be executed four years later in 2009

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“Which will come first, my own death or the execution? That’s all I’ve been thinking about. I now have something to take with me to my daughters when it’s my time to go,” says the victims’ father, Kazuo Uehara, 60.

Uehara, still coping with his health after suffering a stroke last year, heard from the media that the execution had taken place. Yukio Yamaji, 25, one of the youngest to be handed the death penalty in postwar Japan, was executed on July 28 at the Osaka Detention Center.

In 2000, Yamaji had killed his mother with a metal baseball bat at the age of 16. Shortly after being released in 2004, in the following year he raped and stabbed to death two sisters sharing an apartment – Asuka Uehara, 27, and her sister Chihiro, 19.

The man admitted to the slaying of the sisters and asked for the death penalty, making freakish comments in court such as “Killing humans is the same as breaking something.”

Akira Hashiguchi, his attorney at the time, expressed his disappointment in being unable to find any sign of remorse in the man. The death row inmate had long been uncommunicative, but the final time he met Yamaji, he was certain the man was suffering “incarceration fatigue,” having lost considerable weight and asking to be executed as soon as possible.

Without family or friends, he had no last words, and remained silent all the way to the execution chamber. In the absence of any clarification as to his motive for the killings, the murder remains a mystery.


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A 22-year-old man charged with murdering two sisters and torching their dwelling pleaded guilty Monday, saying he has no plan to contest the charges by prosecutors, who claim he killed for pleasure.

Yukio Yamaji, unemployed with no fixed address, told his first trial session at the Osaka District Court, “The facts read (by prosecutors) are correct.”

According to the prosecutors, Yamaji, who in 2000 murdered his mother, broke into a condominium in Naniwa Ward, Osaka, in the early hours of Nov. 17 and fatally stabbed Asuka Uehara, 27, and Chihiro Uehara, 19.

The women were found with deep stab wounds to their chests and faces.

After killing them, Yamaji stole 5,000 yen and set the condo on fire before fleeing, the prosecutors said.

The victims did not know Yamaji.

Yamaji’s lawyers tried to seek leniency by denying part of the prosecutors’ claims, saying he had no intention of stealing money.

They also demanded a psychological analysis be conducted on him.

Before Yamaji was served an arrest warrant on the murder charge in December, he had been detained for trespassing in a building adjacent to the women’s condominium earlier the same month.

During a police investigation, Yamaji, who killed his mother in 2000 when he was a minor, told investigators he killed the sisters because he “could not forget the feelings” he experienced when he killed his 50-year-old mother.

“I wanted to see human blood,” Yamaji was quoted as saying by an investigation source.

Earlier, Yamaji told the investigators about the knife he used in the murders and they found it at a Shinto shrine a few hundred meters from the building.

Yamaji was institutionalized after beating his mother to death with a baseball bat in August 2000 in the city of Yamaguchi when he was 16.

The Yamaguchi family court had sent him to a reform center for minors after concluding the attack on his mother was not deliberately planned and “it is possible to correct” him “although he does not have a deep sense of guilt.” He was released from the reform center in October 2003.

During Monday’s court session, Yamaji did not make specific comments on his motive.


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Yukio Yamaji was executed in 2009
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