At least he must have thought that he took responsibility for his acts. Then, he could have lived differently after he came back to Japan. I am sure he wanted to apologize even if the apology would not be accepted. I also would like to have the government and the Emperor apologize to us for sending able-bodied Japanese men to war . It is not too late yet.
Many people are still alive suffering from the old wounds.
Military sex slaves, slave laborers, survivors of atrocious military operations, POWs, former Japanese soldiers of Korean national. They all need care for their psychological damages as well as monetary compensation. If dead people cannot come back alive, we can take the first step of apologizing to them. Act of invasion leads to genocide , in which people are wiped out just like flies and mosquitos. Poor Micchan could never get used to the act of killing.