EntityQ4396592· pop 10· linked from 22 articlesMamoru TakumaSign in to saveJapanese mass murderer responsible for the 2001 Osaka School Massacre (1963–2004)Connectionsmental disorderEntityOsaka PrefectureEntitySuicideConceptOsakaEntityabortionEntitycapital punishmentEntityInternational Standard Book NumberEntitygasolineEntitymurderEntityrapeEntityschizophreniaEntityperfumeEntitydepressionEntitytaxiEntitybreastfeedingEntityHyōgo PrefectureEntityNaraEntityhallucinationEntitybankruptcyEntitymandibleEntityCategories1963 births1984 crimes in Japan2004 deaths2004 murders in Japan20th-century Japanese murderers21st-century executions by Japan21st-century Japanese criminalsBus driversExecuted Japanese mass murderersJapanese murderers of childrenJapanese people convicted of rapeJapanese people in transport