Mamoru Takuma
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was a Japanese
mass murder Mass murder is the act of murdering a number of people, typically simultaneously or over a relatively short period of time and in close geographic proximity. The United States Congress defines mass killings as the killings of three or more pe ...
er who killed eight children in the
Osaka school massacre The Osaka school massacre was a mass murder that occurred at Ikeda Elementary School in Ikeda, Osaka Prefecture, Japan on 8 June 2001, in which Mamoru Takuma, a 37-year-old ex-convict with a history of mentally disturbed and anti-social behavio ...
in
Ikeda Ikeda may refer to: * Ikeda (surname), a Japanese surname * Ikeda (comics), a character in ''Usagi Yojimbo'' * Ikeda clan, a Japanese clan * Ikeda map, chaotic attractor * ''Ikeda'' (annelid) a genus of the family Ikedidae Places * Ikeda, Osaka i ...
,
Osaka Prefecture is a Prefectures of Japan, prefecture of Japan located in the Kansai region of Honshu. Osaka Prefecture has a population of 8,778,035 () and has a geographic area of . Osaka Prefecture borders Hyōgo Prefecture to the northwest, Kyoto Prefecture ...
, on 8 June 2001. Takuma had a long history of
mentally disturbed A mental disorder, also referred to as a mental illness or psychiatric disorder, is a behavioral or mental pattern that causes significant distress or impairment of personal functioning. Such features may be persistent, relapsing and remitti ...
and
anti-social behaviour Antisocial behavior is a behavior that is defined as the violation of the rights of others by committing crime, such as stealing and physical attack in addition to other behaviors such as lying and manipulation. It is considered to be disrupti ...
, and an extensive
criminal record A criminal record, police record, or colloquially RAP sheet (Record of Arrests and Prosecutions) is a record of a person's criminal history. The information included in a criminal record and the existence of a criminal record varies between coun ...
including a conviction for
rape Rape is a type of sexual assault usually involving sexual intercourse or other forms of sexual penetration carried out against a person without their consent. The act may be carried out by physical force, coercion, abuse of authority, or ag ...
. He stabbed to death eight students and seriously wounded fifteen others at Ikeda Elementary School in a knife attack that lasted several minutes. Takuma was convicted in August 2003 and
executed Capital punishment, also known as the death penalty, is the state-sanctioned practice of deliberately killing a person as a punishment for an actual or supposed crime, usually following an authorized, rule-governed process to conclude that t ...
on 14 September 2004.


Early life

Mamoru Takuma was born on 23 November 1963 in Itami,
Hyōgo Prefecture is a prefecture of Japan located in the Kansai region of Honshu. Hyōgo Prefecture has a population of 5,469,762 () and has a geographic area of . Hyōgo Prefecture borders Kyoto Prefecture to the east, Osaka Prefecture to the southeast, an ...
, Japan. As a child, he displayed unusual and anti-social behavior: at the age of three, he rode his tricycle towards the center of a highway, causing traffic jams, and habitually killed small animals by wrapping them in newspaper and lighting them on fire. From elementary school to junior high, Takuma was both a victim and a perpetrator of
bullying Bullying is the use of force, coercion, hurtful teasing or threat, to abuse, aggressively dominate or intimidate. The behavior is often repeated and habitual. One essential prerequisite is the perception (by the bully or by others) of an imba ...
. He expressed envy and jealousy for the "highly educated and high-income elite" from an early age. Takuma was both physically abused and neglected by his father, whom he contemplated stabbing to death in his sleep. In February 1979, Takuma enrolled in high school in
Amagasaki file:Amagasaki Castle Tenshu 20181125.jpg, 270px, Amagasaki Castle file:Amagasaki city center area Aerial photograph.1985.jpg, 270px, Aerial view of Amagasaki city center file:Amagasaki st03s3000.jpg, 270px, Amagasaki Station is an industrial Citi ...
, but dropped out in March 1981. He worked part-time at a
gas station A filling station, also known as a gas station () or petrol station (), is a facility that sells fuel and engine lubricants for motor vehicles. The most common fuels sold in the 2010s were gasoline (or petrol) and diesel fuel. Gasoline ...
for several months until enlisting in the
Japan Air Self Defense Force The , , also informally referred to as the Japanese Air Force, is the air and space branch of the Japan Self-Defense Forces, responsible for the defense of Japanese airspace, other air and space operations, cyberwarfare and electronic warfare. ...
at the end of 1981, at age 18. However, Takuma was discharged in January 1983 for boarding and sleeping with a teenage runaway. His relationship with his parents worsened following the discharge, and there were incidents in which his father beat him with stones. Takuma in turn threatened to enlist the ''
yakuza , also known as , are members of transnational organized crime syndicates originating in Japan. The Japanese police and media, by request of the police, call them , while the ''yakuza'' call themselves . The English equivalent for the term ...
'' to "mess up" their lives. In 1984, Takuma and his mother left the family home and purchased an apartment, leaving his oldest brother and father by themselves. They lived together for a year and a half, until his father came back for his wife. In February 1999, Takuma's brother, facing
bankruptcy Bankruptcy is a legal process through which people or other entities who cannot repay debts to creditors may seek relief from some or all of their debts. In most jurisdictions, bankruptcy is imposed by a court order, often initiated by the debtor ...
, died by
suicide Suicide is the act of intentionally causing one's own death. Mental disorders (including depression, bipolar disorder, schizophrenia, personality disorders, anxiety disorders), physical disorders (such as chronic fatigue syndrome), and s ...
by slashing his neck with a knife. His father was hospitalized due to drunkenness after the incident, but according to Takuma in the detention center, he said, "I wanted him to commit suicide like
Tsutomu Miyazaki was a Japanese serial killer who murdered four young girls in Tokyo and Saitama Prefecture between August 1988 and June 1989. He abducted and killed the girls, aged from 4 to 7, in his car before dismembering them and molesting their corpses. ...
's father." Takuma's mother had a lifelong struggle with
mental illness A mental disorder, also referred to as a mental illness or psychiatric disorder, is a behavioral or mental pattern that causes significant distress or impairment of personal functioning. Such features may be persistent, relapsing and remitti ...
, and died in late 2016. His father died in April 2020, aged 88. The former Takuma residence in Itami was demolished in September 2020; the site is currently vacant.


Criminal history

On 21 November 1984, Takuma
rape Rape is a type of sexual assault usually involving sexual intercourse or other forms of sexual penetration carried out against a person without their consent. The act may be carried out by physical force, coercion, abuse of authority, or ag ...
d a woman while collecting rent for a
condominium A condominium (or condo for short) is an ownership structure whereby a building is divided into several units that are each separately owned, surrounded by common areas that are jointly owned. The term can be applied to the building or complex ...
management company. After the incident, believing the woman had filed a complaint to the police, he consulted a psychiatrist with his mother on 12 December and he complained about hearing
hallucination A hallucination is a perception in the absence of an external stimulus that has the qualities of a real perception. Hallucinations are vivid, substantial, and are perceived to be located in external objective space. Hallucination is a combinatio ...
s, "feeling that he's plunged into someone" and other complaints. The hospital initially diagnosed him with
anxiety Anxiety is an emotion which is characterized by an unpleasant state of inner turmoil and includes feelings of dread over anticipated events. Anxiety is different than fear in that the former is defined as the anticipation of a future threat wh ...
, but later stated it was
schizophrenia Schizophrenia is a mental disorder characterized by continuous or relapsing episodes of psychosis. Major symptoms include hallucinations (typically hearing voices), delusions, and disorganized thinking. Other symptoms include social withdra ...
in the medical certificate and in response to police inquiries. Takuma, who was placed in a closed ward, was dissatisfied with his care. On 4 January 1985, he jumped from the roof of the hospital's fifth floor in a suicide attempt, but instead fractured his
mandible In anatomy, the mandible, lower jaw or jawbone is the largest, strongest and lowest bone in the human facial skeleton. It forms the lower jaw and holds the lower tooth, teeth in place. The mandible sits beneath the maxilla. It is the only movabl ...
and
maxilla The maxilla (plural: ''maxillae'' ) in vertebrates is the upper fixed (not fixed in Neopterygii) bone of the jaw formed from the fusion of two maxillary bones. In humans, the upper jaw includes the hard palate in the front of the mouth. The t ...
. He later wrote to his mother that he was hospitalized to avoid being pursued by the police in a rape case and jumped off the fifth floor to "harass his parents". After being discharged from the hospital, Takuma decided to commit even more crimes for "revenge on the world." Later, the doctor in charge of Takuma's psychological examination stated that it may have strengthened his resentment towards society. In November 1986, Takuma was sentenced to three years in prison for the rape charge. While in prison, he jumped out of the hospital ward, explaining in a letter to his mother that he did it because she would not cooperate regarding his discharge. He demanded that his parents pay for his living expenses after release. His father refused, citing Takuma's lack of remorse, and told him that he would hand over the money he traded in for his personal belongings to
disown Disownment occurs when a parent renounces or no longer accepts a child as a family member, usually due to reprehensible actions leading to serious emotional consequences. Different from giving a child up for adoption, it is a social and interper ...
him. After his release from prison in March 1989, Takuma moved to
Ikeda Ikeda may refer to: * Ikeda (surname), a Japanese surname * Ikeda (comics), a character in ''Usagi Yojimbo'' * Ikeda clan, a Japanese clan * Ikeda map, chaotic attractor * ''Ikeda'' (annelid) a genus of the family Ikedidae Places * Ikeda, Osaka i ...
and found work driving buses and trucks. His coworkers described him as a quiet and unremarkable man, but a bit of a loner who did not like dealing with customers. Takuma testified in a later psychological examination that he caused two fatal car accidents, one when he was a
dump truck A dump truck, known also as a dumping truck, dump trailer, dumper trailer, dump lorry or dumper lorry or a dumper for short, is used for transporting materials (such as dirt, gravel, or demolition waste) for construction as well as coal. A typi ...
driver and the other when he was a
semi-trailer truck A semi-trailer truck, also known as a semitruck, (or semi, eighteen-wheeler, big rig, tractor-trailer or, by synecdoche, a semitrailer) is the combination of a tractor unit and one or more semi-trailers to carry freight. A semi-trailer ...
. In the first incident, while transporting industrial waste in the mountains, Takuma drove in front of another truck and suddenly pressed the brake pedal on a downward turn, causing a collision; all the passengers of the other truck died the next day. He lied about the cause of the crash and was not
indicted An indictment ( ) is a formal accusation that a person has committed a crime. In jurisdictions that use the concept of felonies, the most serious criminal offence is a felony; jurisdictions that do not use the felonies concept often use that of an ...
on any charges. In the second incident, while driving near the
Metropolitan Expressway is a network of toll expressways in the Greater Tokyo Area of Japan. It is operated and maintained by the . Most routes are grade-separated (elevated roads or tunnels) and central routes have many sharp curves and multi-lane merges that requ ...
, Takuma caused a motorist to fatally collide with a side wall. He immediately left the scene. In September 1993, Takuma was again arrested for rape. In 1998, he was fired after assaulting a bus passenger over the smell of her
perfume Perfume (, ; french: parfum) is a mixture of fragrant essential oils or aroma compounds (fragrances), fixatives and solvents, usually in liquid form, used to give the human body, animals, food, objects, and living-spaces an agreeable scent. Th ...
. He found a new job as maintenance man at Itami Elementary School, six kilometers away from Ikeda. Later that year, Takuma was arrested on suspicion of assaulting his ex-wife. On 3 March 1999, Takuma dissolved
temazepam Temazepam (sold under the brand names Restoril among others) is a medication of the benzodiazepine class which is generally used to treat severe or debilitating insomnia. It is taken by mouth. Temazepam is rapidly absorbed, and significant hypno ...
, a tranquilizer, into the tea served in the teachers' room, sending four people to the hospital for three days. Regarding this incident he said, "I was ignored by the teachers and did not go well with my family, and I wanted to relieve my anger due to human relationships." Takuma was arrested, but was not criminally punished as was found "not responsible" due to mental illness. In November 1999, Takuma was arrested on suspicion of
burglary Burglary, also called breaking and entering and sometimes housebreaking, is the act of entering a building or other areas without permission, with the intention of committing a criminal offence. Usually that offence is theft, robbery or murder ...
, but the charges were dropped. He managed to get a job as a
taxi driver ''Taxi Driver'' is a 1976 American film directed by Martin Scorsese, written by Paul Schrader, and starring Robert De Niro, Jodie Foster, Cybill Shepherd, Harvey Keitel, Peter Boyle, Leonard Harris, and Albert Brooks. Set in a decaying and ...
in September 2000, but was fired the following month after he assaulted a hotel
bellhop A bellhop (North America), or hotel porter (carrier), porter (international), is a hotel employee who helps patrons with their luggage while check-in, checking in or out. Bellhops often wear a uniform (see bell-boy hat), like certain other Page (a ...
in
Osaka is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third most populous city in Japan, following Special wards of Tokyo and Yokohama. With a population of 2. ...
, breaking his nose. In November 2000, Takuma got a job as a truck driver at a construction materials company in Ikeda, but was fired a few months later due to problems including a
road rage Road rage is aggressive or angry behavior exhibited by motorists. These behaviors include rude and verbal insults, yelling, physical threats or dangerous driving methods targeted at other drivers, pedestrians or cyclists in an effort to intimid ...
incident. He was also kicked out of several apartments for, among other things, throwing his garbage out from the balcony. On 23 May 2001, Takuma voluntarily admitted himself into a psychiatric hospital for depression, but left the next day without treatment. He was also arrested for driving his car in reverse gear on the
Hanshin Expressway The is a network of expressways surrounding Osaka, Kobe and Kyoto, Japan. Operated by , it opened in 1962. Portions of the Hanshin Expressway about east of Fukae Station collapsed during the Kobe earthquake on 17 January 1995. These section ...
but released after he was found mentally unfit.


Massacre

On 8 June 2001, the day of his court hearing for the bellhop assault case, Takuma went on a murderous rampage at Ikeda Elementary School. He began to attack students and teachers with a
kitchen knife A kitchen knife is any knife that is intended to be used in food preparation. While much of this work can be accomplished with a few general-purpose knives – notably a large chef's knife, a tough cleaver, a small paring knife and some sort of ...
until he was wrestled down by staff. In the quick attack, Takuma killed eight students (seven 8-year-old girls and one 7-year-old boy) and seriously wounded thirteen other children and two teachers. He was described as being in an extremely confused state when arrested, at first repeating, "I went to the elementary school", and then saying, "I went to the train station and stabbed 100 people with my knife. I did not go to the elementary school." Takuma stated he "drank ten times the medicine" immediately after his arrest and a subsequent medical examination was performed on him. The medicine in question turned out to be three types: the antipsychotic
Seroquel Quetiapine, sold under the brand name Seroquel among others, is an atypical antipsychotic medication used for the treatment of schizophrenia, bipolar disorder, and major depressive disorder. Despite being widely used as a sleep aid due to its ...
, the antidepressant
Paxil Paroxetine, sold under the brand names Paxil and Seroxat among others, is an antidepressant of the selective serotonin reuptake inhibitor (SSRI) class. It is used to treat major depressive disorder, obsessive-compulsive disorder, panic disorder, ...
, and the
benzodiazepine Benzodiazepines (BZD, BDZ, BZs), sometimes called "benzos", are a class of depressant drugs whose core chemical structure is the fusion of a benzene ring and a diazepine ring. They are prescribed to treat conditions such as anxiety disorders, ...
drug
Lormetazepam Lormetazepam, sold under the brand name Noctamid among others, is a drug which is a short to intermediate acting 3-hydroxy benzodiazepine derivative and temazepam analogue. It possesses hypnotic, anxiolytic, anticonvulsant, sedative, and skel ...
. Even in the instance all of these medications are taken at ten times their standard prescribed dose, they are more likely to cause
somnolence Somnolence (alternatively sleepiness or drowsiness) is a state of strong desire for sleep, or sleeping for unusually long periods (compare hypersomnia). It has distinct meanings and causes. It can refer to the usual state preceding falling asleep ...
or
sedation Sedation is the reduction of irritability or agitation by administration of sedative drugs, generally to facilitate a medical procedure or diagnostic procedure. Examples of drugs which can be used for sedation include isoflurane, diethyl ether, ...
, not psychotic behavior. Takuma also stated: :「何もかも嫌になった。何回も自殺を図ったが死にきれない。捕まえて死刑にしてほしかった。」 : ' : "I've become disgusted with everything. I've tried to kill myself several times, but couldn't. I wanted to be caught and be given a death sentence." Takuma also expressed hatred for the affluent children who attended Ikeda Elementary School.


Trial and execution

Takuma's lawyers argued that he was suffering from
temporary insanity The insanity defense, also known as the mental disorder defense, is an affirmative defense by excuse in a criminal case, arguing that the defendant is not responsible for their actions due to an episodic psychiatric disease at the time of the ...
at the time of the attack, but the psychiatrist who had initially diagnosed him as schizophrenic told the court he later determined that Takuma actually had
paranoid personality disorder Paranoid personality disorder (PPD) is a mental illness characterized by paranoid delusions, and a pervasive, long-standing suspiciousness and generalized mistrust of others. People with this personality disorder may be hypersensitive, easily in ...
. On 28 August 2003, Takuma was found guilty of multiple counts of murder and
sentenced to death Capital punishment, also known as the death penalty, is the state-sanctioned practice of deliberately killing a person as a punishment for an actual or supposed crime, usually following an authorized, rule-governed process to conclude that t ...
. Takuma remained unrepentant, refusing to apologize to the families of the victims, and asked only for the sentence to be fulfilled as fast as possible. In court, he engaged in intentionally provocative behavior, including yawning, shaking his body, and staring at victims' family members. His statement was, "I should have used
gasoline Gasoline (; ) or petrol (; ) (see ) is a transparent, petroleum-derived flammable liquid that is used primarily as a fuel in most spark-ignited internal combustion engines (also known as petrol engines). It consists mostly of organic co ...
, so I could have killed more than I did." On the last day of the trial, Takuma still expressed no guilt or remorse and continued to insult the victims' families until the judge removed him. The sentence was carried out unusually quickly by Japanese standards (condemned prisoners in Japan usually spend many years on
death row Death row, also known as condemned row, is a place in a prison that houses inmates awaiting Capital punishment, execution after being convicted of a capital crime and sentenced to death. The term is also used figuratively to describe the state of ...
); Takuma was executed at the Osaka Detention House only one year later, on 14 September 2004.


Influence

Takuma consistently hoped for the death penalty after the incident and was executed at an unusual speed in Japan. Since then, some people have committed crimes to be sentenced to death. Kaoru Kobayashi, who
sexually assaulted Sexual assault is an act in which one intentionally sexually touches another person without that person's consent, or coerces or physically forces a person to engage in a sexual act against their will. It is a form of sexual violence, which ...
and murdered 7-year-old Kaede Ariyama in
Nara The National Archives and Records Administration (NARA) is an " independent federal agency of the United States government within the executive branch", charged with the preservation and documentation of government and historical records. It i ...
in November 2004, considered Takuma to be a
charisma Charisma () is a personal quality of presence or charm that compels its subjects. Scholars in sociology, political science, psychology, and management reserve the term for a type of leadership seen as extraordinary; in these fields, the term "ch ...
tic murderer and sought a speedy execution like him. He said:


list of copycat incident

*
Kaoru Kobayashi (murderer) was a Japanese newspaper deliveryman who kidnapped, sexually assaulted and murdered 7-year-old in Nara, Nara Prefecture, on November 17, 2004. Kobayashi, an ex-convict and pedophile with a record as a prolific sex offender, was sentenced to dea ...
*
Yukio Yamaji was a Japanese serial killer. He murdered his own mother in 2000, was imprisoned, and then paroled in 2003. 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 senten ...
*
Masahiro Kanagawa was a Japanese man who went on a stabbing spree in the city of Tsuchiura on March 23, 2008, which left a 27-year-old man dead and seven others wounded. Police arrested Kanagawa, then 24, who was wanted in an earlier slaying of a 72-year-old man. ...
*
Toride Station is a passenger railway station located in the city of Toride, Ibaraki Prefecture, Japan operated by the East Japan Railway Company (JR East). It is also shared by the private railway operator Kantō Railway. Lines Toride Station is served by the ...
2010 knife attack *
October 2021 Tokyo attack At around 8 p.m. JST on 31 October 2021, a man, 24-year-old Kyota Hattori carried out a knife and arson attack on a Keiō Railway train as it was travelling to Kokuryō Station on the Keiō Line in Chōfu, a city in the western suburbs of Tokyo, ...


See also

*
List of executions in Japan Capital punishment is a legal penalty for murder in Japan, and is applied in cases of multiple murder or aggravated single murder. Executions in Japan are carried out by hanging, and the country has seven execution chambers, all located in major ...


References


External links


Takuma Mamoru
* https://web.archive.org/web/20071228095650/http://gonta13.at.infoseek.co.jp/newpage203.htm * http://yabusaka.moo.jp/ikeda.htm {{DEFAULTSORT:Takuma, Mamoru 1963 births 2004 deaths 20th-century Japanese criminals 21st-century Japanese criminals 21st-century executions by Japan Executed Japanese people Executed mass murderers Japanese mass murderers Japanese murderers of children Japanese people convicted of murder Japanese people convicted of rape Japanese rapists People convicted of murder by Japan People executed by Japan by hanging People from Itami, Hyōgo People with antisocial personality disorder People with paranoid personality disorder 2004 murders in Japan Japanese taxi drivers Bus drivers 1984 crimes in Japan Male murderers