I think the reasons are as follows. First, the robber consciousness in his bones has not changed. He has been robbing Filipino families, holding a gun, and he is disgusted with it. When robbing people, he also robbed, stealing vegetables and fruits from villagers at the foot of the mountain, and then cooking wild animals in the mountains for dinner. I have to say that he has little knowledge of survival in the wild, and he has never had a serious illness such as cancer for so many years.
Secondly, his physical quality is strong. You know, he has never been sick in the wild. Thanks to his good health, he would have died hundreds of times in the wild without cold medicine and basic medical equipment. You know, a little cold will make him feel uncomfortable all over, and he can't take care of himself, because he can't drink hot water or make a fire in the wild, that is, he can't eat. This also benefits from his strong body and basic scientific knowledge, so he can take care of himself.
Third, his luck, you know, is so good that he can slip away unscathed every time he fights with the Philippine army, even when there are few people around him. This can directly show that his own luck has reached a state, so it is really a miracle that he can escape unscathed with his poor hands and then take so many people under attack.
Fourth, stubborn, because he stubbornly waited for the final instructions, because his superiors told them to wait, saying that they would be taken home within four or five years, and no one was allowed to commit suicide during this period. You know, they have a habit of committing suicide easily, and their superiors also said that no one can cancel this task except himself, so he has been silently waiting for news from his superiors. I didn't expect to wait for decades. Among the four men in the wild forest, he became the captain. Every morning, he would take his team members to the mountains to salute with a sense of responsibility, and later said that he would always be loyal to the emperor. In order to avoid being chased, they have to constantly change places, steal other people's seeds to grow vegetables, and even catch chickens and ducks. They also robbed other people's troops of horses and chariots and killed their drivers.
Fifth, he has a strong sense of anti-stalking. The Philippine army once said that he had been arrested many times, but he escaped vigilantly every time. Not only that, but even his companions couldn't stand it, and he kept running away. Even if life is difficult, he can stay with the army as long as he doesn't cancel the order, which is why the Philippines says it is a headache.
All in all, these aspects of Hiroro Onoda have caused him a great headache in the Philippines. He not only disobeyed other people's orders, but also blindly obeyed the death orders of his superiors, and even persisted in the case of his companions fleeing. In fact, he is very powerful or very resourceful. However, what is criticized is that he has been robbing, doing everything he can like a robber, just to make his life better. Luck is also part of his success. Ordinary people may encounter infectious diseases when they live in the jungle for several years, but they have been successfully avoided.