Tsutomu Miyazaki

During the day, Miyazaki was, by all accounts, a mild-mannered individual. Outside of work, he randomly selected children to kill. He wrote to the families of his victims, sending them letters recalling the details of his murders. Police found that the families of the victims had something else in common: all received silent nuisance phone calls. Miyazaki would not speak a word during these calls, instead simply breathing heavily. If they did not answer Miyazaki’s calls, he would call repeatedly; sometimes their phones would ring up to 20 minutes.

The seven-year trial focused on Miyazaki's mental state at the time of the murders. Under Japanese law, people of unsound minds are not subject to punishment, and the feeble-minded are entitled to reduced sentences. Three teams of court-appointed expert psychiatrists came to differing conclusions about Miyazaki's ability to tell right from wrong. Two teams determined him to be feeble-minded—one team concluding that he was schizophrenic, the other that he had multiple personality disorder. A third team found that although Miyazaki had a personality disorder, he was still capable of taking responsibility for his actions.

Minister of Justice Kunio Hatoyama signed his death warrant and Miyazaki was hanged on June 17, 2008. The unusual swiftness of his execution as well as its timing soon after the Akihabara massacre prompted questions regarding the two incidents; the Ministry of Justice had no comment. Ryūzō Saki said, "His trial was long" and that he was "not willing to criticize Hatoyama".

The Tokyo District Court judged him aware of the magnitude and consequences of his crimes and therefore accountable. He was sentenced to death on April 14, 1997. His death sentence was upheld by both the Tokyo High Court, on June 28, 2001, and the Supreme Court of Justice on January 17, 2006.

The trial began on March 30, 1990. Often talking nonsensically, Miyazaki blamed his actions on "Rat Man", an alter ego who Miyazaki claimed forced him to kill; he spent time during the trial drawing "Rat Man" in cartoon form. Miyazaki's father refused to pay for his son's legal defense and committed suicide in 1994.

Miyazaki was arrested in 1989 in Hachiōji, Tokyo after being confronted by a father who had found Miyazaki taking nude photographs of one of his young daughters. After Miyazaki was apprehended, it was discovered that he had an extensive collection of anime and horror videotapes, causing a moral panic against otaku. Though psychiatrists diagnosed Miyazaki as having one or more personality disorders, he was determined to be aware of his crimes and their consequences, and was sentenced to death by hanging in 1997. He was executed in 2008.

On June 6, 1989, Miyazaki convinced five-year-old Ayako Nomoto to allow him to take pictures of her. He then led her into his car and murdered her. He covered the corpse with a bed sheet and placed her in the trunk of his car, taking the body to his apartment. He spent the next two days engaging in sexual acts with the corpse, taking pictures of it in various positions, and filming it.

On July 23, 1989, Miyazaki saw two sisters playing in a park in Hachiōji, Tokyo. He managed to separate the younger of the sisters from the older one, who stayed behind. The sisters' father arrived shortly after to find Miyazaki taking photographs of the younger daughter, who he had convinced to strip nude. The father attacked Miyazaki, but was unable to restrain him. After fleeing on foot, Miyazaki eventually returned to the park to retrieve his car, whereupon he was arrested by police responding to a call by the father. A search of Miyazaki's two-room bungalow produced 5,763 videotapes, some containing anime and slasher films (later used as reasoning for his crimes). Interspersed among them was video footage and pictures of his victims. He was also reported to be a fan of horror films, of which he had a collection. Miyazaki, who retained a perpetually calm and collected demeanor during his trial, appeared indifferent to his capture.

Miyazaki was rejected by his two younger sisters, and felt he only received support from his grandfather. In May 1988, his grandfather died. This served to deepen his depression and isolated him even further. In an attempt to "retain something from him", Miyazaki ate part of his grandfather's ashes. A few weeks later, one of his sisters caught him watching her while she was taking a shower. When she told him to leave, Miyazaki attacked her. When his mother learned of the incident and demanded that he spend more time working, and less time with his videos, he attacked her as well.

Between August 1988 and June 1989, Miyazaki mutilated and killed four girls between the ages of four and seven, and sexually molested their corpses. He drank the blood of one victim and ate a part of her hand. These crimes—which prior to Miyazaki's apprehension were named the "Little Girl Murders" and later the Tokyo/Saitama Serial Kidnapping Murders of Little Girls (東京・埼玉連続幼女誘拐殺人事件 , Tōkyō Saitama renzoku yōjo yūkai satsujin jiken) —shocked Saitama Prefecture, which had few crimes against children.

On August 22, 1988, one day after Miyazaki's 26th birthday, Mari Konno, a four-year-old girl, vanished while playing at a friend's house. After failed attempts to find her, Konno's father contacted the police. Miyazaki had led Konno into his black Nissan Langley and abducted her. He drove westward of Tokyo and parked the car under a bridge in a wooded area. There he sat alongside the girl for a half-hour before murdering her. He then engaged in sexual acts with the corpse and left her corpse in the hills near his home. He took her clothes with him and departed. He allowed Konno's corpse to decompose for a while before later returning to remove the hands and feet, which he kept in his closet. These were recovered upon his arrest. He charred her remaining bones in his furnace, ground them into powder, and sent them to her family in a box, along with several of her teeth, photos of her clothes, and a postcard which read: "Mari. Cremated. Bones. Investigate. Prove."

On October 3, 1988, Miyazaki was driving along a rural road when he spotted seven-year-old Masami Yoshizawa. He offered her a ride, and she accepted. He then drove to the same place he had killed Konno, and killed Yoshizawa. He engaged in sexual acts with the corpse, and took the girl's clothes with him when he departed.

On December 12, 1988, four-year-old Erika Namba was returning home from a friend's house when Miyazaki kidnapped her, forcing her into his car. He drove to a parking lot in Naguri, Saitama, forced her to remove her clothes in the back seat, and began to take pictures of her. After killing her, he tied her hands and feet behind her back, covered her with a bed sheet, and placed the body in his car's trunk. He disposed of the girl's clothes in a wooded area and left the body in the adjoining parking lot. Miyazaki sent a postcard to her family, assembled using words cut out of magazines: "Erika. Cold. Cough. Throat. Rest. Death."

In the mid-1980s, Miyazaki moved back into his parent's house near his father's print shop, sharing a room with his elder sister. Although Miyazaki's family was highly influential in Itsukaichi, where his father owned a newspaper, Miyazaki expressed no desire to take over his father's job. After his arrest, Miyazaki would say that what he really craved was "being listened to about his problems" but believed that his parents, more worried about the material than the sentimental—"would have not heard [him]; [he] would've been ignored". In the same confession, he said that by this period in his life he had begun to consider suicide.

Tsutomu Miyazaki (宮﨑 勤 , Miyazaki Tsutomu, August 21, 1962 – June 17, 2008) , also known as the Otaku Murderer or the Little Girl Murderer, was a Japanese serial killer, cannibal, child rapist and necrophile who abducted and murdered four young girls—and sexually molested their corpses—in the Saitama and Tokyo prefectures between August 1988 and June 1989. His crimes included not only kidnapping, murder, and necrophilia, but also vampirism and the preservation of body parts as trophies.