Her lawyers appealed the 2017 ruling, arguing that she suffers from dementia and does not understand legal procedures, but the Supreme Court rejected the appeal; The judgment becomes enforceable.
Chisaku Kakehi, from 2007 to 2013, poisoned 3 of her husbands in order to inherit their fortunes, and evade her debts.
According to court sessions, Kakehi joined online dating and marriage services and specifically requested to meet rich, childless men.
According to the court ruling, the 74-year-old woman killed her then-75-year-old husband, and two other men, aged 71 and 75, and tried to kill an acquaintance, aged 79, by making them eat A capsule containing the deadly cyanide poison in order for you to inherit their money, and until their deaths appear natural due to their old age!
The brutal murders at the time attracted great media attention in Japan, after the media focused on that murderous woman, as she was preying on rich and old men to seize their wealth, as "Kakehi" was linked to her husband, and after she managed to kill him, she was associated with more than 10 Men, from whom she inherited more than 9 million dollars, according to the website of the Nippon Times magazine, which is concerned with Japanese affairs.
Kakehi was also convicted of attempting to murder and rob another man who has since died of cancer, and the Japanese woman married three other husbands who all died, but no charges were brought against her in connection with their deaths.
The nickname "Black Widow" is due to the female spider known as "Black Widow", who resorts to killing her male partner after mating.