The most recent kaishakunin of the 20th century was Hiroyasu Koga, who beheaded the novelist Yukio Mishima during Mishima's seppuku.
On 2 September in Tokyo, Morita and "Chibi Koga" recruited Hiroyasu Koga ("Furu" Koga), who was a Tatenokai member also, and he met Mishima to hear details of the plan on 9 September.
His second, a 25-year-old named Masakatsu Morita, tried three times to ritually behead Mishima but failed; his head was finally severed by Hiroyasu Koga.
Hiroyasu Koga | Takuma Koga | Mitsuki Koga | KOGA-FM |