Huisheng (age 19) and Ōkubo (age 20) disappeared on 4 December 1957 and were later found dead on Mount Amagi in the Izu Peninsula. Huisheng, wearing a golden ring on her finger, lay with her head cradled in Ōkubo's left arm. Ōkubo held a pistol in his right hand. Above their heads was a twisted piece of tissue paper containing snips of their hair and fingernails - an element in the ritual of a Japanese love suicide. This murder-suicide incident was known as the .