On every 20 th, I go back home in Gifu to pray for my mother passed 2 years ago, while seeing and talking with my father to know his physical condition. He seems to have been depressed after his wife’s death, often mumbling something like complaint against others. Being alone might make him unstable, but he wants to be alone in his own world without being disturbed by anyone else. How shall I treat him to feel safe and comfortable?