Why did the Chinese authorities, civilians, and Chinese TV stations leave him alive and return him to Japan? He should have given his life on the spot with an apology. But The life of an old man with no future may not be worth it.
Even the pharmaceutical companies in the area are closed to anyone except those involved, so there's no way they'd let a middle-school-age boy into a facility that touches on military secrets. If he's going to lie, I want to yell at him and tell him to tell a better lie. This old man is the last survivor who was brainwashed at the Fushun War Criminals Management Center. Young Japanese people don't need to take what this old man says seriously or have a sense of redemption.