孤愁(Saudade)was firstly piblished serially by 新田次郎 30 years ago. But it had not ended because of his sudden death. The son of 新田次郎 藤原正彦 continute to the end. The first half was by 新田次郎、and the second half was by 藤原正彦 then. A main character Moraes was a real person who was a Portuguese general consul to Japan. He was married Japanese woman. After she had passed away Moraes resigned diplomat and renounced his all titles which Portguese government gave him. He selected to live alone in Japan the rest of his life with embracing 孤愁 and memory of his wife. Besides being diplomat Moraes was a famous essayist in Portugal in this way he bound to the society. But he prefered live alone. I sympathize his mentality because Japanese have had the tradition 隠遁(seclusion). I am wandering whether his tendency was due to Japanese mentality or Portuguese mentality.