In his interview with the Kyodo News Agency, he described, in particular, his experience with the two Filipino men suspected of spying. He said he sedated the men by placing ether-soaked cloth over their mouths, and then was instructed to study their livers after making an incision with a surgical knife.
He recounted in detail his encounter with the two suspected spies from the Philippines, describing how he administered anesthesia using ether-soaked cloth and subsequently examined their internal organs after making a surgical cut.