Yukio Yamaji (山地 悠紀夫) was a Japanese serial killer.
1995
His father died of cirrhosis in January 1995.
After graduating from junior high school, he dropped out and began working at a newspaper store.
2000
He murdered his own mother in 2000, was imprisoned, and then paroled in 2003.
Yamaji killed his 50-year-old mother with a metal baseball bat in Yamaguchi city, Yamaguchi Prefecture at age 16 on July 29, 2000.
He called the police and was arrested on July 31, 2000.
He stated that his motives to commit matricide were his mother's silent telephone calls to the woman with whom he had fallen in love and his mother's mounting debt.
2003
He was paroled in October 2003.
2005
In 2005, two years after his release, he raped and then murdered a 27-year-old woman and her 19-year-old sister, for which he was sentenced to death.
On November 17, 2005, Yamaji raped and murdered a 27-year-old woman named Asuka Uehara and her 19-year-old sister, Chihiro, with a knife, in Naniwa, Osaka.
He then set fire to their apartment and fled.
The two victims had never met Yamaji before.
He was arrested on December 5, 2005.
While in custody, he stated to the Osaka police, "I could not forget the feeling when I killed my mother, and wanted to see human blood."
2006
On December 13, 2006, the Osaka District Court sentenced him to death.
His defense launched an appeal, but according to his lawyers he retracted it since he was reluctant to pursue leniency.
2009
He was executed in 2009.
Yamaji was born into a poor family.
He was executed at the Osaka Detention House alongside Japanese serial killer Hiroshi Maeue on July 28, 2009.
