I found this on the Mainichi Daily News too. I copied it for Frog:
Personality of the Period
Sada Abe (1905 - ?)
Even today, the name Sada Abe tends to send a chill down the spine of many Japanese men. Abe was convicted of murdering her lover. But it was the circumstances behind the crime rather than the act itself that frightened many.
On May 18, 1936, Abe strangled Kichizo Ishida, her lover, at a Tokyo inn. Abe had wrapped her obi, or kimono belt, around Ishida's neck with the intention of bringing him to the brink of asphyxiation -- and orgasm -- and satisfy his twisted sexual desires. But instead of the desired effect, Abe ended up "going too far," as she later told police. She later used a meat cleaver to chop off Ishida's penis and scrotum, which she wrapped in paper and kept with her "to stop feeling lonely" until handing them over to police upon her arrest on May 21, 1936. She had written a message in Ishida's blood on his thighs and on their bedding that they were bound together forever.
Abe was sentenced to six years imprisonment but given an amnesty in 1940 to coincide with the 2,600th anniversary of Emperor Jimmu's ascension to the throne. Abe used an assumed name and later married, but her husband divorced her when he found out who she was. She became an entertainer, playing herself in dramatic re-enactments of her crime. Abe disappeared in 1970 and her whereabouts remain unknown.